CN208101262U - A kind of improved PP TYPE - Google Patents
A kind of improved PP TYPE Download PDFInfo
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- CN208101262U CN208101262U CN201820460963.3U CN201820460963U CN208101262U CN 208101262 U CN208101262 U CN 208101262U CN 201820460963 U CN201820460963 U CN 201820460963U CN 208101262 U CN208101262 U CN 208101262U
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- metallocene
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Abstract
The utility model discloses a kind of improved PP TYPEs, including intermediate barrier layer, the interior side bonds of intermediate barrier layer are provided at least one layer of first polyethylene layer, intermediate barrier layer has been orderly arranged outside each the second polyethylene layer and appearance polycaprolactam amine layer, second polyethylene layer includes at least two layers of polyethylene elementary layer, first polyethylene layer and the polyethylene units layer being bonded with intermediate barrier layer are metallocene polyethylene layer, metallocene polyethylene layer with a thickness of the 17~39% of PP TYPE total thickness.The utility model is by being equipped with multilayer metallocene polyethylene layer, utilize the material capability of symmetrical the co-extrusion laminar flow and metallocene PE of co-extrusion film, the flexibility and black brittleness for improving co-extrusion film, PP TYPE still has enough intensity at low temperature after ensure that moisture absorption.
Description
Technical field
The utility model relates to co-extrusion technical field of membrane, specially a kind of improved PP TYPE.
Background technique
The processing of film is that a kind of raw material is expressed on another film or mutually binds different types of film
To the laminated film together and as plural layers, laminated film requires to have good caking property between layers, guarantees whole
The tensile strength of body, while also requiring have good barrier property, how to make laminated film that there is good caking property, intensity, resistance
Every property be laminated film field problem to be solved.
Composite membrane is chiefly used in food packaging, and binder, the selection of solvent and gluing are used in the processing of composite membrane
Technique etc. will meet corresponding sanitary standard requirement.Co-extrusion film has most of feature of composite membrane, but has and a little distinguish,
That is all layers of co-extrusion film are all therefore other non-plastic materials such as do not have aluminium foil, paper in same time extrusion molding.Its
The combining form of product material is relatively fewer, and the scope of application is also smaller, but due to fitting be between layers by hot melt combine
Want relatively reliable without binder, therefore to the wholesomeness of food packaging co-extrusion film, but existing PP TYPE exists
It is more single in structure, be functionally also lacking, have the defects that it is certain, such as：
In order to guarantee lower production cost, the PA material in barrier film generallys use PA6, and barrier film is especially by PA6
As the barrier film on surface layer, in the higher low temperature of humidity（- 30~-18 DEG C）Under the conditions of show stronger brittleness, toughness is poor.
Utility model content
The purpose of the utility model is to overcome defects existing in the prior art, provide a kind of improved multi-layer co-extruded
Film, the PP TYPE have good low-temperature flexibility.
To achieve the above object, the utility model provides the following technical solutions：A kind of improved PP TYPE, including in
Between barrier layer, the interior side bonds of intermediate barrier layer are provided at least one layer of first polyethylene layer, and the outside of intermediate barrier layer is successively
It is provided with the second polyethylene layer and appearance polycaprolactam amine layer, the second polyethylene layer includes at least two layers of polyethylene elementary layer,
In, the first polyethylene layer and the polyethylene units layer being bonded with intermediate barrier layer are metallocene polyethylene layer, the poly- second of metallocene
Alkene layer with a thickness of the 17~39% of PP TYPE total thickness.
It is respectively provided with metallocene polyethylene layer by the two sides in intermediate barrier layer, forms the material arrangement of Local Symmetric, and
The Flow of Goods and Materials of symmetrical structure is more likely formed laminar flow, and obtained film layer combined strength bination is higher, and due to metallocene PE material
Matter has good low-temperature flexibility, facilitates the low-temperature flexibility for improving PP TYPE.
Preferred technical solution is that intermediate barrier layer is single layer polycaprolactam amine layer, or for by evoh layer and two sides
Symmetrical structure film made of conjunction is laminated in strata caprolactam, and the sum of the thickness of polycaprolactam amine layer is not more than in PP TYPE
35%。
Preferred technical solution is the co-extrusion film that PP TYPE be at least nine layers, the total thickness of PP TYPE for 105~
125 microns.
Preferred technical solution is that the appearance polycaprolactam layer surface on surface layer is provided with corona layer, by sided corona treatment
Polycaprolactam amine layer afterwards is easy to adsorb ink and adhesive, is convenient for printing pattern layer or compound other function film layer.
Preferred technical solution is, the second polyethylene layer includes three-layer polyethylene elementary layer, and the second polyethylene layer is by outside extremely
Inside it is followed successively by the first linear low density polyethylene layer, the second linear low density polyethylene layer and metallocene polyethylene layer.
Compared with prior art, the utility model has the beneficial effects that：
1, the utility model utilizes symmetrical co-extrusion laminar flow and the cyclopentadienyl gold of co-extrusion film by being equipped with multilayer metallocene polyethylene layer
Belong to the material capability of polyethylene, improves the flexibility and black brittleness of co-extrusion film, PP TYPE is in low temperature after ensure that moisture absorption
Under still have enough intensity；
2, metallocene PE has some improvement to the optical transparence and mist degree of PP TYPE.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment 1；
Fig. 2 is the structural schematic diagram of embodiment 2.
In figure：1, intermediate barrier layer；2, the first polyethylene layer；3, the second polyethylene layer；31, metallocene polyethylene layer；32,
Linear low density polyethylene layer；4, appearance polycaprolactam amine layer；5, corona layer.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1
As shown in Figure 1, the improved PP TYPE of embodiment 1, including intermediate barrier layer 1, the inside of intermediate barrier layer 1 are viscous
It connects and is provided at least one layer of first polyethylene layer 2, intermediate barrier layer 1 has been orderly arranged outside each the second polyethylene layer 3 and appearance
Polycaprolactam amine layer 4, the second polyethylene layer 3 include three-layer polyethylene elementary layer, wherein the first polyethylene layer 2 is poly- for metallocene
Pvdf layer, the polyethylene units layer being bonded with intermediate barrier layer is metallocene polyethylene layer, is labeled as 31, gathers in oneself with appearance
The LLDPE layer of amide layer fitting labeled as 32, metallocene polyethylene layer with a thickness of the 17~39% of PP TYPE total thickness.
1 intermediate barrier layer of embodiment is single layer polycaprolactam amine layer, and the membrane structure formula of 1 PP TYPE of embodiment is PA/
TIE/LDPE/LDPE/mPE/TIE/PA/TIE/mPE, each thicknesses of layers is in co-extrusion film：20 μm of intermediate barrier layer PA thickness, in
Between 14 μm of mPE thickness, 12 μm of LDPE thickness, 20 μm of appearance PA thickness and interior 25 μm of table mPE thickness, food high-resistant diaphragm total thickness
115 microns.Above-mentioned PA is PA6.
The sum of the thickness of two layers of PA accounts for the 34.78% of co-extrusion film total thickness, and two layers of mPE layers of the sum of thickness accounts for co-extrusion film total thickness
33.91%.
Co-extrusion film properties testing result is as follows：
Tensile strength（GB/T1040.3）Longitudinal 37.82N/15mm, lateral 31.9 N/15mm（Specified value is >=19）；
Elongation at break（GB/T1040.3）Longitudinal 412.4 %, lateral 418.2%（Specified value is >=300）；
Interior heat seal strength（QB/T2358）47.48N/15mm（Specified value >=30N）
Peel strength（GB8008）11.67N/15mm（Specified value >=5N）
Humidity 50%, after -30 DEG C of heat preservation 36h processing of refrigerated storage temperature, PP TYPE still keeps good pliability.
Intermediate mPE layers of control sample use LLDPE material, compared with Example 1, under identical refrigerated condition toughness compared with
Difference, puncture resistant ability is weak, and the corner angle that bag body pumping generates after inner package easily puncture adjacent bag body；It is left that elongation at break increases by 5%
It is right.
Embodiment 2
As shown in Fig. 2, embodiment 2 the difference from embodiment 1 is that, intermediate barrier layer 1 be by evoh layer and two sides
Symmetrical structure film made of the stacking of strata caprolactam is closed, the second polyethylene layer 3 include two layers of polyethylene elementary layer, the second poly- second
Alkene layer is followed successively by linear low density polyethylene layer 32 and metallocene polyethylene layer 31 from outside to inside.PP TYPE structural formula is
PA/TIE/LLDPE/mPE/TIE/PA/EVOH/PA/TIE/mPE/mPE。
PP TYPE is the co-extrusion film of eleventh floor.
The appearance polycaprolactam layer surface on surface layer is provided with corona layer 5.
The barrier property of embodiment 2 is better than embodiment 1, and toughness and embodiment 1 are suitable under identical refrigerated condition.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. the interior side bonds of a kind of improved PP TYPE, including intermediate barrier layer, intermediate barrier layer are provided at least one layer
First polyethylene layer, intermediate barrier layer have been orderly arranged outside each the second polyethylene layer and appearance polycaprolactam amine layer, and second is poly-
Pvdf layer includes at least two layers of polyethylene elementary layer, which is characterized in that the first polyethylene layer and what is be bonded with intermediate barrier layer gather
Ethylene unit layer is metallocene polyethylene layer, metallocene polyethylene layer with a thickness of the 17~39% of PP TYPE total thickness.
2. PP TYPE according to claim 1, which is characterized in that intermediate barrier layer is single layer polycaprolactam amine layer,
It or is the symmetrical structure film as made of the stacking conjunction of the internal layer polycaprolactam of evoh layer and two sides, polycaprolactam in PP TYPE
The sum of thickness of amine layer is not more than 35%.
3. PP TYPE according to claim 2, which is characterized in that the co-extrusion film that PP TYPE is at least nine layers,
The total thickness of PP TYPE is 105~125 microns.
4. PP TYPE according to claim 2, which is characterized in that the appearance polycaprolactam layer surface on surface layer is arranged
There is corona layer.
5. PP TYPE according to claim 2, which is characterized in that the second polyethylene layer includes three-layer polyethylene unit
Layer, the second polyethylene layer be followed successively by from outside to inside the first linear low density polyethylene layer, the second linear low density polyethylene layer and
Metallocene polyethylene layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820460963.3U CN208101262U (en) | 2018-04-03 | 2018-04-03 | A kind of improved PP TYPE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820460963.3U CN208101262U (en) | 2018-04-03 | 2018-04-03 | A kind of improved PP TYPE |
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| CN208101262U true CN208101262U (en) | 2018-11-16 |
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| CN201820460963.3U Active CN208101262U (en) | 2018-04-03 | 2018-04-03 | A kind of improved PP TYPE |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112123900A (en) * | 2020-09-28 | 2020-12-25 | 广东东溢新材料科技有限公司 | Aluminum-plastic film and preparation method thereof |
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2018
- 2018-04-03 CN CN201820460963.3U patent/CN208101262U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112123900A (en) * | 2020-09-28 | 2020-12-25 | 广东东溢新材料科技有限公司 | Aluminum-plastic film and preparation method thereof |
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