CN104512080A - Low-temperature dropping resistant film and its application - Google Patents
Low-temperature dropping resistant film and its application Download PDFInfo
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- CN104512080A CN104512080A CN201410768811.6A CN201410768811A CN104512080A CN 104512080 A CN104512080 A CN 104512080A CN 201410768811 A CN201410768811 A CN 201410768811A CN 104512080 A CN104512080 A CN 104512080A
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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
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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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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Abstract
The invention provides a low-temperature dropping resistant film and its application. The film comprises an outer layer, a middle layer and an inner layer. The outer layer comprises the following raw materials by weight: 50-70% of a first linear low density polyethylene, 15 -25% of a fisrt low density polyethylene and 15-25% of a first metallocene linear low density polyethylene; the middle layer comprises the following raw materials by weight: 15-25% of a second linear low density polyethylene, low density polyethylene, 15- 25% of a second low density polyethylene, 30-50% of a second metallocene linear low density polyethylene and 15-25% of color masterbatch; and the inner layer comprises the following raw materials by weight: 95-98% of a third metallocene linear low density polyethylene, 1-2.5% of an opening agent and 1-2.5% of a slip agent. The film has high strength and puncture resistance, and the middle layer has good bonding with the outer and inner layers, and the film has a high resistance to low temperature dropping.
Description
Technical field
The present invention relates to film production manufacture field, fall film and application thereof in particular to one is low temperature resistant.
Background technology
In recent years along with people are to pay attention to day by day that is healthy and health, the kind of cleaning solution is not short to be increased, and demand also constantly increases, and articles for washing has become the necessary article of people's life.Relative to solid kind cleaning solution articles for use, cleaning solution good water solubility, does not need induced lysis, uses more for convenience, is particularly suitable for Urban population and washs needs frequently.But because cleaning solution mobility is large and have certain chemical corrosivity, therefore cleaning solution just can come into the market after must packing to sell.
For packing the standing package of liquid detergent in existing market, the material-structure of packaging bag film is generally milky white 100-200 μm of PET12/PA15/PE, and (implication is: PET thickness 12 μm, dry type compound PA thickness 15 μm, the milkyr white film of dry type compound PE (the milky white film thickness of PE 100 μm to 200 μm).But the cost that this film is used as packaging bag is higher.
Part standing package selects milky white 120-150 μm of PET12/PE.But the packaging bag of this film material easily bale broken occurs when falling, particularly when north of china in winter temperature is lower than zero degree, packaging bag embrittlement, makes the broken rate of product higher.Its main cause is that the performance of PE film fails to reach requirement, and at low temperatures, PE film can hardening, embrittlement, and when causing the product produced to fall at low temperatures, bale broken probability is very large.And the low temperature resistant product falling film that temporary transient nothing can be mass in this field at present.
In order to solve the standing package problem that easily broken rate is high when low temperature falls in prior art, needing to provide a kind of and low temperature resistantly falling film.
Summary of the invention
Main purpose of the present invention is to provide a kind of and low temperature resistantly falls film and application thereof, to solve in prior art the problem of the low temperature resistant drop performance difference of packaging bag of standing.
To achieve these goals, according to an aspect of the present invention, provide and a kind of low temperature resistantly fall film, it comprises skin, intermediate layer and internal layer successively; Wherein, form outer field raw materials by weight meter to comprise: first LLDPE of 50 ~ 70%, first low density polyethylene (LDPE) of 15 ~ 25% and 15 ~ 25% the first metallocene linear-low density polyethylene; The raw materials by weight meter forming intermediate layer comprises: second LLDPE of 15 ~ 25%, second low density polyethylene (LDPE) of 15 ~ 25%, second metallocene linear-low density polyethylene of 30 ~ 50% and the Masterbatch of 15 ~ 25%; Form the raw materials by weight meter of internal layer to comprise: the 3rd metallocene linear-low density polyethylene of 95 ~ 98%, the opening agent of 1 ~ 2.5% and the slipping agent of 1 ~ 2.5%.
Further, the above-mentioned low temperature resistant 1.5m of film at-18 DEG C of temperature that fall falls broken rate and is less than 10%.
Further, in above-mentioned internal layer, the 3rd metallocene linear-low density polyethylene be selected from MLLDPE-SP2020, MLLDPE-SP0510 and MLLDPE-SP0540 one or more.
Further, the raw materials by weight meter forming internal layer comprises: the MLLDPE-SP2020 of 70 ~ 85%, the MLLDPE-SP0510 of 13 ~ 25%, the opening agent of 1 ~ 2.5% and the slipping agent of 1 ~ 2.5%.
Further, in above-mentioned skin, the first LLDPE is selected from LLDPE-7042 and/or 201XV; First low density polyethylene (LDPE) is selected from LDPE-2420H and/or LDPE-2420D; First metallocene linear-low density polyethylene be selected from MLLDPE-SP1520, MLLDPE-SP0510 and MLLDPE-SP0540 one or more; Preferably, the first LLDPE is LLDPE-7042, and the first low density polyethylene (LDPE) is LDPE-2420H, and the first metallocene linear-low density polyethylene is MLLDPE-SP1520.
Further, in above-mentioned intermediate layer, the second LLDPE be selected from LLDPE-2045, LLDPE-7042 and 201XV one or more; Second low density polyethylene (LDPE) is selected from LDPE-2426H and/or LDPE-2426D; Second metallocene linear-low density polyethylene is selected from MLLDPE-SP0510 and/or MLLDPE-SP0540; Preferably, the second LLDPE is LLDPE-2045, and the second low density polyethylene (LDPE) is LDPE-2426H, and the second metallocene linear-low density polyethylene is MLLDPE-SP0510.
Further, above-mentionedly low temperature resistantly fall in film, outer field percentage by weight is 20 ~ 30%, and the percentage by weight in intermediate layer is 40 ~ 60%, and the percentage by weight of internal layer is 20 ~ 30%.
Further, above-mentionedly low temperature resistantly fall in film, the Thickness Ratio of outer, intermediate layer and internal layer is 1:1 ~ 2:1 ~ 2, is preferably 1:2:1.
Further, above-mentioned Masterbatch is selected from white master batch 58890.
Further, above-mentioned opening agent be selected from opening agent EAZ-10 one or more, slipping agent is selected from slipping agent ESQ-4.
According to a further aspect in the invention, provide and a kind ofly low temperature resistantly fall the application of film in standing package.
The invention provides and a kind of low temperature resistantly fall film and application thereof, this low temperature resistant film that falls have employed three layers structure.Wherein, skin comprises the first LLDPE, the first low density polyethylene (LDPE) and the first metallocene linear-low density polyethylene.Skin can be made to have higher intensity and anti-puncture performance containing above-mentioned several dissimilar polyethylene simultaneously.Adopt look mother that film can be made to have different colors in intermediate layer, simultaneously, containing the second LLDPE, the second low density polyethylene (LDPE) and the second metallocene linear-low density polyethylene in intermediate layer, this layer and inside and outside two-layer adhesion strength can also be improved.What is more important, employs the 3rd metallocene linear-low density polyethylene in above-mentioned internal layer, effectively can improve the overall flexibility of film, makes it under low-temperature condition, keep good toughness.Thus effectively can improve the low temperature resistant drop performance of film, make it be more suitable for applying in standing package.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.The present invention is described in detail below in conjunction with embodiment.
Introducing as background technology part, easily there is the phenomenon of bale broken in existing standing package when low temperature falls.In order to address this problem, the invention provides and a kind of low temperature resistantly fall film, it comprises skin, intermediate layer and internal layer successively; Wherein, form outer field raw materials by weight meter to comprise: first LLDPE of 50 ~ 70%, first low density polyethylene (LDPE) of 15 ~ 25% and 15 ~ 25% the first metallocene linear-low density polyethylene; The raw materials by weight meter forming intermediate layer comprises: second LLDPE of 15 ~ 25%, second low density polyethylene (LDPE) of 15 ~ 25%, second metallocene linear-low density polyethylene of 30 ~ 50% and the Masterbatch of 15 ~ 25%; Form the raw materials by weight meter of internal layer to comprise: the 3rd metallocene linear-low density polyethylene of 95 ~ 98%, the opening agent of 1 ~ 2.5% and the slipping agent of 1 ~ 2.5%.
The above-mentioned low temperature resistant film that falls provided by the present invention have employed three layers structure.Wherein, skin comprises the first LLDPE, the first low density polyethylene (LDPE) and the first metallocene linear-low density polyethylene.Skin can be made to have higher intensity and anti-puncture performance containing above-mentioned several dissimilar polyethylene simultaneously.Adopt Masterbatch that film can be made to have different colors in intermediate layer, simultaneously, containing the second LLDPE, the second low density polyethylene (LDPE) and the second metallocene linear-low density polyethylene in intermediate layer, this layer and inside and outside two-layer adhesion strength can also be improved.What is more important, employs the 3rd metallocene linear-low density polyethylene in above-mentioned internal layer, effectively can improve the overall flexibility of film, makes it under low-temperature condition, keep good toughness.Thus effectively can improve the low temperature resistant drop performance of film, make it be more suitable for applying in standing package.
Preferably, the above-mentioned low temperature resistant 1.5m of film at-18 DEG C of temperature that fall falls broken rate and is less than 10%.
Provided by the present inventionly above-mentionedly low temperature resistantly fall in film, the 3rd metallocene linear-low density polyethylene adopted in internal layer can be the conventional metal linear low density polyethylene (LDPE) in this area.In a preferred embodiment, in above-mentioned internal layer, the 3rd metallocene linear-low density polyethylene be selected from MLLDPE-SP2020, MLLDPE-SP0510 and MLLDPE-SP0540 one or more.Adopting above-mentioned several metal linear low density polyethylene (LDPE) as the material of film internal layer, the toughness of film can be improved further, from making it, there is under low-temperature condition higher resistance to drop performance.
One more preferred embodiment in, the above-mentioned low temperature resistant raw materials by weight meter falling the internal layer of film comprises: the MLLDPE-SP2020 of 70 ~ 85%, the MLLDPE-SP0510 of 13 ~ 25%, the opening agent of 1 ~ 2.5% and the slipping agent of 1 ~ 2.5%.The MLLDPE-SP2020 adopted in the present invention is a kind of metallocene linear-low density polyethylene material of ageing-resistant, high tenacity, high strength, and it has good toughness and good hot strength at low temperatures.The present invention, by controlling in above-mentioned scope by the ratio of MLLDPE-SP2020 and other each materials, more effectively can improve the toughness of film under low-temperature condition, thus improve its low temperature resistant drop performance.
Provided by the present inventionly above-mentionedly low temperature resistantly fall in film, the type that the first LLDPE adopted in skin, the first low density polyethylene (LDPE) and the first metallocene linear-low density polyethylene can adopt this area usual.In a preferred embodiment, in above-mentioned skin, the first LLDPE is selected from LLDPE-7042 and/or 201XV; First low density polyethylene (LDPE) is selected from LDPE-2420H and/or LDPE-2420D; First metallocene linear-low density polyethylene be selected from MLLDPE-SP1520, MLLDPE-SP0510 and MLLDPE-SP0540 one or more.After the polyvinyls of this several model adds according to aforementioned ratio, the skin obtained has higher intensity and puncture, can improve the comprehensive serviceability of film further, makes it more suitablely apply in standing package.More preferably, the first LLDPE is LLDPE-7042, and the first low density polyethylene (LDPE) is LDPE-2420H, and the first metallocene linear-low density polyethylene is MLLDPE-SP1520.
Provided by the present inventionly above-mentionedly low temperature resistantly fall in film, the material type that the second LLDPE that intermediate layer adopts, the second low density polyethylene (LDPE) and the second metallocene linear-low density polyethylene adopt this area usual.In a preferred embodiment, the second LLDPE in above-mentioned intermediate layer be selected from LLDPE-2045, LLDPE-7042 and 201XV one or more; Second low density polyethylene (LDPE) is selected from LDPE-2426H and/or 2426D; Second metallocene linear-low density polyethylene is selected from MLLDPE-SP0510 and/or MLLDPE-SP0540.After the polyvinyls of this several model adds according to aforementioned ratio, the intermediate layer obtained has more excellent intensity, meanwhile, two-layerly has better caking property with inside and outside.More preferably, the second LLDPE is LLDPE-2045, and the second low density polyethylene (LDPE) is LDPE-2426H, and the second metallocene linear-low density polyethylene is MLLDPE-SP0510.
Provided by the present inventionly above-mentionedly low temperature resistantly fall in film, those skilled in the art can select to use magnitude relation between three layers.In a preferred embodiment, above-mentionedly low temperature resistantly fall in film, outer field percentage by weight is 20 ~ 30%, and the percentage by weight in intermediate layer is 40 ~ 60%, and the percentage by weight of internal layer is 20 ~ 30%.To control, in above-mentioned scope, to be conducive to the various aspects of performance of comprehensive film with magnitude relation between three layers, make it have better serviceability.Preferably, above-mentionedly low temperature resistantly fall in film, the Thickness Ratio of outer, intermediate layer and internal layer is 1:1 ~ 2:1 ~ 2.Similarly, the Thickness Ratio of each layer is controlled in above-mentioned scope, be conducive to the comprehensive serviceability improving film further, make it be more suitable for applying in standing package.More preferably, the Thickness Ratio of above-mentioned skin, intermediate layer and internal layer is 1:2:1.
Provided by the present inventionly above-mentionedly low temperature resistantly fall in film, the look mother that intermediate layer adopts can be that the usual look in this area is female.Preferably, above-mentioned Masterbatch includes but not limited to white master batch 58890.
Provided by the present inventionly above-mentionedly low temperature resistantly fall in film, the material that the opening agent of employing and slipping agent can adopt this area usual.In a preferred embodiment, above-mentioned opening agent includes but not limited to opening agent EAZ-10, and slipping agent includes but not limited to slipping agent ESQ-4.
In addition, present invention also offers a kind of above-mentioned low temperature resistant preparation method falling film, comprise the following steps: by the raw material Coextrusion Blow Moulding of outer, intermediate layer and internal layer.Particularly, this preparation technology is as follows:
Step one, batch mixing, to stir into batch mixing by the usage ratio of each layer raw material for subsequent use respectively by skin, middle level, internal layer raw material separately;
Step 2, batching, prepare burden by percentage by weight between layers by the batch mixing of skin, middle level, each layer of internal layer;
Step 3, coextrusion blown film, adopt inflation film manufacturing machine blow molding, obtains above-mentionedly low temperature resistantly falling film.
Spice operation can be comprised in concrete preparation section, operation is extruded in charging process, plasticizing, inflation traction operation, vane refrigerating work procedure, herringbone clamping plate operation, carry-over pinch rolls traction operation, sided corona treatment operation and film take-up operation.Those skilled in the art can select technological parameter concrete in each operation, do not repeat them here.
According to a further aspect in the invention, additionally provide and a kind ofly above-mentionedly low temperature resistantly fall the application of film in standing package.
The above-mentioned low temperature resistant film that falls provided by the present invention is applied in standing package, the low-temperature flexibility of packaging bag can be significantly improved, meanwhile, can also time packaging bag there is higher intensity, anti-puncture performance.In addition, the above-mentioned low temperature resistant film that falls provided by the present invention also has the low and advantage of corrosion resistance and good of production cost, can be used widely in liquid detergent standing package.
Be described in further detail the present invention below in conjunction with specific embodiment, these embodiments can not be interpreted as restriction the present invention scope required for protection.
Embodiment 1
(1) prepare burden:
Skin raw material and weight percentage: the LLDPE-7042 of 60%; The LDPE-2420H of 20%; And the MLLDPE-SP1520 of 20%;
Intermediate layer raw material and weight percentage: the LLDPE-2045 of 20%; The LDPE-2426H of 20%; And the MLLDPE-SP0510 of 40%; The white master batch 58890 of 20%;
Internal layer raw material and weight percentage: the MLLDPE-SP2020 of 72%; The MLLDPE-SP0510 of 24%; The opening agent EAZ-10 of 2%; And the slipping agent ESQ-4 of 2%;
Wherein, skin raw material, middle level raw material and internal layer raw material account for 25%, 50% and 25% of raw material gross mass respectively.
(2) blow molding:
The material of above proportioning is processed in Multi-layer blown film equipment, comprises following operation: spice operation, charging process, plasticizing extrude operation, inflation traction operation, vane refrigerating work procedure, herringbone clamping plate operation, carry-over pinch rolls traction operation, sided corona treatment operation, film take-up operation.Obtain low temperature resistantly falling film, this overall film thickness is 130 μm, and the Thickness Ratio between outer, intermediate layer and internal layer is 1:2:1.
(3) standing package preparation:
Preparation in above-mentioned steps (2) low temperature resistant is fallen after film and polyester film carry out dry type compound, be prepared into standing package.
Embodiment 2
(1) prepare burden:
Skin raw material and weight percentage: the 201XV of 50%; The LDPE-2420D of 25%; And the MLLDPE-SP0510 of 25%;
Intermediate layer raw material and weight percentage: the LLDPE-7042 of 25%; The LDPE-2426D of 15%; And the MLLDPE-SP0540 of 45%; The white master batch 58890 of 15%;
Internal layer raw material and weight percentage: the MLLDPE-SP0510 of 96%; The opening agent EAZ-10 of 2%; And the slipping agent ESQ-4 of 2%;
Wherein, skin raw material, middle level raw material and internal layer raw material account for 25%, 50% and 25% of raw material gross mass respectively.
(2) blow molding:
The material of above proportioning is processed in Multi-layer blown film equipment, comprises following operation: spice operation, charging process, plasticizing extrude operation, inflation traction operation, vane refrigerating work procedure, herringbone clamping plate operation, carry-over pinch rolls traction operation, sided corona treatment operation, film take-up operation.Obtain low temperature resistantly falling film, this overall film thickness is 130 μm, and the Thickness Ratio between outer, intermediate layer and internal layer is 1:2:1.
(3) standing package preparation:
Preparation in above-mentioned steps (2) low temperature resistant is fallen after film and polyester film carry out dry type compound, be prepared into standing package.
Embodiment 3
(1) prepare burden:
Skin raw material and weight percentage: the LLDPE-7042 of 70%; The LDPE-2420H of 15%; And the MLLDPE-SP0540 of 15%;
Intermediate layer raw material and weight percentage: the 201XV of 20%; The LDPE-2426H of 25%; And the MLLDPE-SP0510 of 30%; The white master batch 58890 of 25%;
Internal layer raw material and weight percentage: the MLLDPE-SP2020 of 65%; The MLLDPE-SP0510 of 33%; The opening agent EAZ-10 of 1%; And the slipping agent ESQ-4 of 1%;
Wherein, skin raw material, middle level raw material and internal layer raw material account for 20%, 60% and 20% of raw material gross mass respectively.
(2) blow molding:
The material of above proportioning is processed in Multi-layer blown film equipment, comprises following operation: spice operation, charging process, plasticizing extrude operation, inflation traction operation, vane refrigerating work procedure, herringbone clamping plate operation, carry-over pinch rolls traction operation, sided corona treatment operation, film take-up operation.Obtain low temperature resistantly falling film, this overall film thickness is 130 μm, and the Thickness Ratio between outer, intermediate layer and internal layer is 1:3:1.
(3) standing package preparation:
Preparation in above-mentioned steps (2) low temperature resistant is fallen after film and polyester film carry out dry type compound, be prepared into standing package.
Embodiment 4
(1) prepare burden:
Skin raw material and weight percentage: the LLDPE-7042 of 60%; The LDPE-2420H of 20%; And the MLLDPE-SP1520 of 20%;
Intermediate layer raw material and weight percentage: the LLDPE-2045 of 15%; The LDPE-2426H of 20%; And the MLLDPE-SP0510 of 50%; The white master batch 58890 of 15%;
Internal layer raw material and weight percentage: the MLLDPE-SP2020 of 70%; The MLLDPE-SP0510 of 25%; The opening agent EAZ-10 of 2.5%; And the slipping agent ESQ-4 of 2.5%;
Wherein, skin raw material, middle level raw material and internal layer raw material account for 30%, 40% and 30% of raw material gross mass respectively.
(2) blow molding:
The material of above proportioning is processed in Multi-layer blown film equipment, comprises following operation: spice operation, charging process, plasticizing extrude operation, inflation traction operation, vane refrigerating work procedure, herringbone clamping plate operation, carry-over pinch rolls traction operation, sided corona treatment operation, film take-up operation.Obtain low temperature resistantly falling film, this overall film thickness is 130 μm, and the Thickness Ratio between outer, intermediate layer and internal layer is 1:1.33:1.
(3) standing package preparation:
Preparation in above-mentioned steps (2) low temperature resistant is fallen after film and polyester film carry out dry type compound, be prepared into standing package.
Embodiment 5
(1) prepare burden:
Skin raw material and weight percentage: the LLDPE-7042 of 60%; The LDPE-2420H of 20%; And the MLLDPE-SP1520 of 20%;
Intermediate layer raw material and weight percentage: the LLDPE-2045 of 15%; The LDPE-2426H of 20%; And the MLLDPE-SP0510 of 50%; The white master batch 58890 of 15%;
Internal layer raw material and weight percentage: the MLLDPE-SP2020 of 85%; The MLLDPE-SP0510 of 13%; The opening agent EAZ-10 of 1%; And the slipping agent ESQ-4 of 1%;
Wherein, skin raw material, middle level raw material and internal layer raw material account for 25%, 50% and 25% of raw material gross mass respectively.
(2) blow molding:
The material of above proportioning is processed in Multi-layer blown film equipment, comprises following operation: spice operation, charging process, plasticizing extrude operation, inflation traction operation, vane refrigerating work procedure, herringbone clamping plate operation, carry-over pinch rolls traction operation, sided corona treatment operation, film take-up operation.Obtain low temperature resistantly falling film, this overall film thickness is 130 μm, and the Thickness Ratio between outer, intermediate layer and internal layer is 1:2:1.
(3) standing package preparation:
Preparation in above-mentioned steps (2) low temperature resistant is fallen after film and polyester film carry out dry type compound, be prepared into standing package.
Comparative example 1
(1) prepare burden:
Skin raw material and weight percentage: the LLDPE-7042 of 40%; The LDPE-2420H of 30%; And the MLLDPE-SP1520 of 30%;
Intermediate layer raw material and weight percentage: the LLDPE-2045 of 30%; The LDPE-2426H of 10%; And the MLLDPE-SP0510 of 55%; The white master batch 58890 of 5%;
Internal layer raw material and weight percentage: the MLLDPE-SP0510 of 90%; The opening agent EAZ-10 of 5%; And the slipping agent ESQ-4 of 5%;
Wherein, skin raw material, middle level raw material and internal layer raw material account for 25%, 50% and 25% of raw material gross mass respectively.
(2) blow molding:
The material of above proportioning is processed in Multi-layer blown film equipment, comprises following operation: spice operation, charging process, plasticizing extrude operation, inflation traction operation, vane refrigerating work procedure, herringbone clamping plate operation, carry-over pinch rolls traction operation, sided corona treatment operation, film take-up operation.Obtain low temperature resistantly falling film, this overall film thickness is 130 μm, and the Thickness Ratio between outer, intermediate layer and internal layer is 1:2:1.
(3) standing package preparation:
Preparation in above-mentioned steps (2) low temperature resistant is fallen after film and polyester film carry out dry type compound, be prepared into standing package.
Characterization test is carried out to the low temperature resistant performance falling film and standing package of preparation in embodiment 1 to 5 and comparative example 1.
Characterizing method:
(1) film stretching intensity: adopt electronics tensile tester to measure low temperature resistant transverse tensile strength and the longitudinal tensile strength falling film of preparation in embodiment 1 to 5 and comparative example 1;
(2) the low temperature resistant drop performance of standing package: load 500ml liquid detergent by the standing package of preparation in embodiment 1 to 5 and comparative example 1, after sealing at-18 DEG C of temperature freezing 24 hours.Place after 1h after taking out and carry out fall-down test, investigate its fall after broken rate, fall and be operating as 1.5m height, perpendicularly to fall, flatly to fall, side falls each 3 times.
Measurement result is as shown in table 1:
Table 1
| Film transverse tensile strength (mpa) | Film longitudinal tensile strength (mpa) | Fall broken rate (%) | |
| Embodiment 1 | 36 | 38 | 0 |
| Embodiment 2 | 32 | 35 | 8％ |
| Embodiment 3 | 32 | 35 | 2.5％ |
| Embodiment 4 | 32 | 35 | 0.5％ |
| Embodiment 5 | 34 | 36 | 0.4％ |
| Comparative example 1 | 31 | 32 | 10％ |
From above data, can find out, the above embodiments of the present invention achieve following technique effect:
Film prepared in the embodiment of the present invention is by after dry type compound, and its film stretching intensity is all higher, and has excellent resistance to freezing resistance to drop performance.In addition, this film production process provided by the present invention is simple, only need realize continuous seepage in conjunction with dispensing equipment by inflation film manufacturing machine.Specifically, have employed the raw material components of specific model, specific consumption in above-described embodiment 1, embodiment 4 and 5, obtained film has more excellent low temperature resistant drop performance.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. low temperature resistantly fall a film, it is characterized in that, comprise skin, intermediate layer and internal layer successively; Wherein,
Form described outer field raw materials by weight meter to comprise: first LLDPE of 50 ~ 70%, first low density polyethylene (LDPE) of 15 ~ 25% and 15 ~ 25% the first metallocene linear-low density polyethylene;
The raw materials by weight meter forming described intermediate layer comprises: second LLDPE of 15 ~ 25%, second low density polyethylene (LDPE) of 15 ~ 25%, second metallocene linear-low density polyethylene of 30 ~ 50% and the Masterbatch of 15 ~ 25%;
The raw materials by weight meter forming described internal layer comprises: the 3rd metallocene linear-low density polyethylene of 95 ~ 98%, the opening agent of 1 ~ 2.5% and the slipping agent of 1 ~ 2.5%.
2. according to claim 1ly low temperature resistantly fall film, it is characterized in that, in described internal layer, described 3rd metallocene linear-low density polyethylene be selected from MLLDPE-SP2020, MLLDPE-SP0510 and MLLDPE-SP0540 one or more.
3. according to claim 2ly low temperature resistantly fall film, it is characterized in that, the raw materials by weight meter forming described internal layer comprises: the described MLLDPE-SP2020 of 70 ~ 85%, the described MLLDPE-SP0510 of 13 ~ 25%, the described opening agent of 1 ~ 2.5% and the described slipping agent of 1 ~ 2.5%.
4. according to any one of claim 1 to 3ly low temperature resistantly fall film, it is characterized in that, in described skin, described first LLDPE is selected from LLDPE-7042 and/or 201XV; Described first low density polyethylene (LDPE) is selected from LDPE-2420H and/or LDPE-2420D; Described first metallocene linear-low density polyethylene be selected from MLLDPE-SP1520, MLLDPE-SP0510 and MLLDPE-SP0540 one or more;
Preferably, described first LLDPE is LLDPE-7042, and described first low density polyethylene (LDPE) is LDPE-2420H, and described first metallocene linear-low density polyethylene is MLLDPE-SP1520.
5. according to claim 4ly low temperature resistantly fall film, it is characterized in that, in described intermediate layer, described second LLDPE be selected from LLDPE-2045, LLDPE-7042 and 201XV one or more; Described second low density polyethylene (LDPE) is selected from LDPE-2426H and/or LDPE-2426D; Described second metallocene linear-low density polyethylene is selected from MLLDPE-SP0510 and/or MLLDPE-SP0540;
Preferably, described second LLDPE is LLDPE-2045, and described second low density polyethylene (LDPE) is LDPE-2426H, and described second metallocene linear-low density polyethylene is MLLDPE-SP0510.
6. according to claim 1ly low temperature resistantly fall film, it is characterized in that, describedly low temperature resistantly fall in film, described outer field percentage by weight is 20 ~ 30%, the percentage by weight in described intermediate layer is 40 ~ 60%, and the percentage by weight of described internal layer is 20 ~ 30%.
7. according to claim 6ly low temperature resistantly fall film, it is characterized in that, describedly low temperature resistantly fall in film, the Thickness Ratio of described skin, described intermediate layer and described internal layer is 1:1 ~ 2:1 ~ 2, is preferably 1:2:1.
8. according to claim 1ly low temperature resistantly fall film, it is characterized in that, described Masterbatch is selected from white master batch 58890.
9. according to claim 1ly low temperature resistantly fall film, it is characterized in that, described opening agent be selected from opening agent EAZ-10 one or more, described slipping agent is selected from slipping agent ESQ-4.
10. low temperature resistant according to any one of a claim 1 to 9 falls the application of film in standing package.
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| CN201410768811.6A CN104512080B (en) | 2014-12-12 | 2014-12-12 | Low temperature resistant fall film and application thereof |
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| CN105172299A (en) * | 2015-09-24 | 2015-12-23 | 李富贵 | Cooling film and manufacturing method thereof |
| CN106243707A (en) * | 2016-07-29 | 2016-12-21 | 诚德科技股份有限公司 | A kind of solvent-free compound PA/PA/PE flexible packing material and preparation technology thereof and application |
| CN106867081A (en) * | 2017-03-30 | 2017-06-20 | 昆山金盟塑料薄膜有限公司 | A kind of liquid packaging film and preparation method thereof |
| CN107323053A (en) * | 2017-06-30 | 2017-11-07 | 黄山永新股份有限公司 | A kind of tear-resistant polyethylene film, composite membrane and preparation method thereof |
| CN108394156A (en) * | 2018-02-15 | 2018-08-14 | 东莞市富默克化工有限公司 | A kind of liquid chemicals packaging film and its preparation method and application |
| CN109177398A (en) * | 2018-09-11 | 2019-01-11 | 上海福助工业有限公司 | Three layers of Coloured film with delustring sense |
| CN111070838A (en) * | 2019-12-31 | 2020-04-28 | 诚德科技股份有限公司 | Recyclable multilayer PE composite film and preparation method thereof |
| CN111532011A (en) * | 2020-04-11 | 2020-08-14 | 上海紫泉标签有限公司 | Puncture-resistant high-strength film and preparation method thereof |
| CN117283955A (en) * | 2023-10-26 | 2023-12-26 | 四川省新都永志印务有限公司 | PE film for low-temperature anti-breaking flexible package inner layer and preparation method thereof |
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| CN105172299A (en) * | 2015-09-24 | 2015-12-23 | 李富贵 | Cooling film and manufacturing method thereof |
| CN106243707A (en) * | 2016-07-29 | 2016-12-21 | 诚德科技股份有限公司 | A kind of solvent-free compound PA/PA/PE flexible packing material and preparation technology thereof and application |
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| CN107323053B (en) * | 2017-06-30 | 2018-11-13 | 黄山永新股份有限公司 | A kind of tear-resistant polyethylene film, composite membrane and preparation method thereof |
| CN108394156A (en) * | 2018-02-15 | 2018-08-14 | 东莞市富默克化工有限公司 | A kind of liquid chemicals packaging film and its preparation method and application |
| CN108394156B (en) * | 2018-02-15 | 2021-03-23 | 东莞市富默克化工有限公司 | Liquid chemical packaging film and preparation method and application thereof |
| CN109177398A (en) * | 2018-09-11 | 2019-01-11 | 上海福助工业有限公司 | Three layers of Coloured film with delustring sense |
| CN111070838A (en) * | 2019-12-31 | 2020-04-28 | 诚德科技股份有限公司 | Recyclable multilayer PE composite film and preparation method thereof |
| CN111532011A (en) * | 2020-04-11 | 2020-08-14 | 上海紫泉标签有限公司 | Puncture-resistant high-strength film and preparation method thereof |
| CN117283955A (en) * | 2023-10-26 | 2023-12-26 | 四川省新都永志印务有限公司 | PE film for low-temperature anti-breaking flexible package inner layer and preparation method thereof |
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| CN104512080B (en) | 2016-09-07 |
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