CN208855165U - A kind of bidirectional stretching polypropylene film of light Anti-scratching - Google Patents
A kind of bidirectional stretching polypropylene film of light Anti-scratching Download PDFInfo
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- CN208855165U CN208855165U CN201821229000.9U CN201821229000U CN208855165U CN 208855165 U CN208855165 U CN 208855165U CN 201821229000 U CN201821229000 U CN 201821229000U CN 208855165 U CN208855165 U CN 208855165U
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Abstract
The utility model discloses a kind of bidirectional stretching polypropylene films of light Anti-scratching, belong to field of packaging material, including sandwich layer, upper epidermis and layer, it is characterized in that the upper epidermis is provided with matte structure, lubricant layer is provided on the end face of upper epidermis, sandwich layer, upper epidermis, layer and lubricant layer are coextruded structure, the beneficial effects of the utility model are: the integral type minute concave-convex structure formed by protrusion or recess portion is arranged in the utility model upper epidermis, to substitute random hard protrusion particle used in conventional BOPP film surface layer, it not only plays and serious adhesion problems occurs during avoiding uncoiling, and it efficiently solves the problems, such as that random silica dioxide granule causes to scrape to shining surfaces and wears；Sandwich layer, upper epidermis, layer and lubricant layer are coextruded structure, and one-pass molding increases the flexible of structure while improving structural stability；It is provided with lubricant layer on the end face on surface layer, further decreases the coefficient of friction of film surface.
Description
Technical field:
The utility model belongs to field of packaging material, and the biaxial tension for relating more specifically to a kind of light Anti-scratching is poly-
Polypropylene film.
Background technique:
Attachment such as charger of mobile phone, tablet computer, earphone of new electronic product etc. can more be adopted now in order to beautiful
With the plastic injection piece of high light, at the same attachment overpack it is more and more using BOPP plastic film rolls around packaging, but film
Surface itself but can cause to scrape in transport handling process to shining surfaces wears, and can find that moulding is bright when into consumer's hand
There are fine scratches in smooth surface, influences sense organ, reduces product specification.
Find that the main reason for generating scratch is the concaveconvex structure that upper epidermis contains random silica dioxide granule according to analysis,
If that if random silica dioxide granule is added on surface layer, serious adhesion problems can not occur during uncoiling, this is also
The reason of particle, is added on the common BOPP film surface layer of the prior art during polymerization, how to solve to occur during uncoiling
Serious adhesion problems and the film of the concaveconvex structure containing random silica dioxide granule cause subtle stroke to moulding shining surfaces
Contradiction between the problem of trace is the emphasis of current BOPP film research.
Summary of the invention:
To solve the above problems, overcome the deficiencies in the prior art, the utility model, which provides one kind, prevents adhesion and scratch resistant
The bidirectional stretching polypropylene film of the light Anti-scratching of wiping, can be effectively solved prevents adhesion to be added to random silica
Grain causes shining surfaces to scrape the problem of wearing.
The utility model solve above-mentioned technical problem the specific technical proposal is: the biaxial tension of the light Anti-scratching
Polypropylene film, including sandwich layer, upper epidermis and layer, it is characterised in that the upper epidermis is provided with matte structure, matte knot
Structure is arranged to the average period of protrusion or recess portion as 2 μm -20 μm of minute concave-convex structure, the protrusion of the matte structure or recess portion
Difference in height be 1-4 μm, be provided with lubricant layer on the end face of the upper epidermis, lubricant layer with a thickness of 0.1-0.8 μm, the core
Layer, upper epidermis, layer and lubricant layer are coextruded structure.
Further, the sandwich layer is arranged to Polypropylene structural, and the thickness of sandwich layer is arranged to 20-50 μm.
Further, the upper epidermis and layer, which are all provided with, is set to homopolypropylene structure, the isotactic of the upper epidermis
Degree is set greater than 96%, and the thickness of the upper epidermis is arranged to 2-6 μm.
Further, the lubricant layer is arranged to silicone compound layer.
The beneficial effects of the utility model are: the utility model upper epidermis is arranged to the homopolymerization poly- third that isotacticity is greater than 96%
Alkene structure, the integral type minute concave-convex structure formed by protrusion or recess portion is arranged in upper epidermis, to substitute conventional BOPP film surface layer
Used random hard protrusion particle not only plays and serious adhesion problems occurs during avoiding uncoiling, and effectively
Ground solves the problems, such as that random silica dioxide granule causes to scrape to shining surfaces and wears；Sandwich layer, upper epidermis, layer and lubricant layer
For coextruded structure, one-pass molding increases the flexible of structure while improving structural stability；It is arranged on the end face on surface layer
Have lubricant layer, further decrease the coefficient of friction of film surface, the lubricant layer with a thickness of 0.1-0.8 μm, ensure that fine
The integrality of concaveconvex structure solves film surface and scrapes to the surface of high light moulding, improves product aesthetics.
Detailed description of the invention:
Attached drawing 1 is the utility model structure diagram；In attached drawing:
1. layer, 2. sandwich layers, 3. upper epidermis, 4. lubricant layers, 5. matte structures, 6. protrusions, 7. recess portions.
Specific embodiment:
To keep the purposes, technical schemes and advantages of the utility model implementation clearer, 1 more comprehensively with reference to the drawings
Ground description.In the description to the utility model, it is to be understood that term " center ", "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as " rear ", " lower-left ", " upper right ", "outside" is to be based on the orientation or positional relationship shown in the drawings,
It is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore should not be understood as the limitation to scope of protection of the utility model.This
Outside, term " first ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
Specific embodiment of the present utility model: the bidirectional stretching polypropylene film of the light Anti-scratching, including core
Layer 2, upper epidermis 3 and layer 1, it is characterised in that the upper epidermis 3 is provided with matte structure 5, and matte structure 5 is arranged to protrusion
6 or the average period of recess portion 7 be 2 μm -20 μm of minute concave-convex structure, the protrusion 6 of the matte structure 5 or the height of recess portion 7
Difference is 1-4 μm, is provided with lubricant layer 4 on the end face of the upper epidermis 3, lubricant layer 4 with a thickness of 0.1-0.8 μm, the sandwich layer
2, upper epidermis 3, layer 1 and lubricant layer 4 are coextruded structure.
Further, the sandwich layer 2 is arranged to Polypropylene structural, and the thickness of sandwich layer 2 is arranged to 20-50 μm.
Further, the upper epidermis 3 and layer 1, which are all provided with, is set to homopolypropylene structure, the upper epidermis 3 etc.
Normality is set greater than 96%, and the thickness of the upper epidermis 3 is arranged to 2-6 μm.
Further, the lubricant layer 4 is arranged to silicone compound layer.
It should be noted that the utility model is a kind of bidirectional stretching polypropylene film of light Anti-scratching, specific works
When,
1. sandwich layer 2, upper epidermis 3, layer 1 and lubricant layer 4 are coextruded structure, it is all made of stretch processes, upper table
Layer 3 select ash contents it is lower≤100ppm, isotacticity is higher >=95%, homopolypropylene preferably >=96%, since high isotactic is poly-
Propylene is a kind of lustration type high polymer, and by controlling its melt cooling temperature, generating α and beta-crystalline form on molding sheet surface makes
It is existed simultaneously, but beta-crystalline form is unstable, would tend to be converted to stable alpha crystalline form when being drawn into film at a certain temperature, by
It is greater than alpha crystalline form in beta-crystalline form density, therefore a large amount of subtle bumps will occur in the surface of film when beta-crystalline form is converted to alpha crystalline form
Rough surface 5, to substitute random hard protrusion particle used in conventional BOPP film surface layer；
2. being provided with lubricant layer 4 on the end face of upper epidermis 3, the coefficient of friction of film surface, the lubrication are further decreased
Layer 4 with a thickness of 0.1-0.8 μm, ensure that the integrality of minute concave-convex structure, solve film surface to high light moulding
Surface scrapes, and improves product aesthetics.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (4)
1. a kind of bidirectional stretching polypropylene film of light Anti-scratching, including sandwich layer (2), upper epidermis (3) and layer (1),
It is characterized in that the upper epidermis (3) is provided with matte structure (5), matte structure (5) is arranged to the flat of protrusion (6) or recess portion (7)
The minute concave-convex structure that the equal period is 2 μm -20 μm, the protrusion (6) of the matte structure (5) or the difference in height of recess portion (7) are 1-4
μm, be provided with lubricant layer (4) on the end face of the upper epidermis (3), lubricant layer (4) with a thickness of 0.1-0.8 μm, the sandwich layer
(2), upper epidermis (3), layer (1) and lubricant layer (4) are coextruded structure.
2. the bidirectional stretching polypropylene film of light Anti-scratching according to claim 1, it is characterised in that the sandwich layer
(2) it is arranged to Polypropylene structural, the thickness of sandwich layer (2) is arranged to 20-50 μm.
3. the bidirectional stretching polypropylene film of light Anti-scratching according to claim 1, it is characterised in that the upper table
Layer (3) and layer (1) are all provided with and are set to homopolypropylene structure, and the isotacticity of the upper epidermis (3) is set greater than 96%, institute
The thickness for stating upper epidermis (3) is arranged to 2-6 μm.
4. the bidirectional stretching polypropylene film of light Anti-scratching according to claim 1, it is characterised in that the lubricant layer
(4) it is arranged to silicone compound layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821229000.9U CN208855165U (en) | 2018-08-01 | 2018-08-01 | A kind of bidirectional stretching polypropylene film of light Anti-scratching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821229000.9U CN208855165U (en) | 2018-08-01 | 2018-08-01 | A kind of bidirectional stretching polypropylene film of light Anti-scratching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208855165U true CN208855165U (en) | 2019-05-14 |
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ID=66413574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821229000.9U Active CN208855165U (en) | 2018-08-01 | 2018-08-01 | A kind of bidirectional stretching polypropylene film of light Anti-scratching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208855165U (en) |
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2018
- 2018-08-01 CN CN201821229000.9U patent/CN208855165U/en active Active
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