CN201102335Y - Multi-layer biaxial tension polypropylene film - Google Patents
Multi-layer biaxial tension polypropylene film Download PDFInfo
- Publication number
- CN201102335Y CN201102335Y CNU2007201273228U CN200720127322U CN201102335Y CN 201102335 Y CN201102335 Y CN 201102335Y CN U2007201273228 U CNU2007201273228 U CN U2007201273228U CN 200720127322 U CN200720127322 U CN 200720127322U CN 201102335 Y CN201102335 Y CN 201102335Y
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- China
- Prior art keywords
- polypropylene film
- acrylic resin
- layer
- bidirectional stretching
- stretching polypropylene
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- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The utility model discloses a multi-layer two-way tensioning polypropylene film. One surface layer of the polypropylene film is a heat-sensitive adhesive layer. The polypropylene film is 12-80 micron thick, and the adhesive layer is 0.8-10 micron thick. Moreover, the adhesive layer is made from polyethylene, ethenyl copolymer, or ion polymer. No adhesive coating is required on the surface of the polypropylene film. The polypropylene film can be compounded directly with the paper, plastic, metal and other materials after being heated.
Description
Technical field:
The utility model relates to a kind of multilayer bidirectional stretching polypropylene film and manufacture method thereof, especially relate to an a kind of top layer and be adhesive layer can with the compound bidirectional stretching polypropylene films of material direct heat such as paper, plastics, glass, metal.
Background technology:
The structure of now commercially available multi-layer co-extruded bidirectional stretching polypropylene film is: acrylic resin layer/acrylic resin intermediate layer/acrylic resin layer.
The top layer that common three layers or five-layer co-squeezing go out bidirectional stretching polypropylene film is the acrylic resin layer, and its primary raw material component is a polypropylene, polyacrylic fusing point higher (161-176 ℃).Temperature when usually paper carries out heat bonding with plastic sheeting can not surpass 95 ℃, because processing temperature can make the moisture content in the paper scatter and disappear when surpassing 95 ℃, causes paper distortion, curling and become fragile and influence product quality.Because polyacrylic fusing point is higher, the heat bonding performance is poor, so common bidirectional stretching polypropylene film can't directly carry out heat bonding with paper under the temperature about 95 ℃.In addition because polyacrylic nonpolar, make the acrylic resin layer can't and metal, glass, most of plastics polar materials is combined with each other well. in present production technology, common bidirectional stretching polypropylene film and paper, plastics, glass, the compound main mode of materials such as metal is to coat layer of adhesive again on the polypropylene film surface, through the heating after again with paper, plastics, glass, materials such as metal carry out compound.So just increased production process one, production cost has also improved widely more, uses adhesive and solvent also to be unfavorable for environmental protection too much simultaneously.
The utility model content:
The utility model purport provide need not additional binder just can with paper, plastics, glass, materials such as metal carry out compound multilayer bidirectional stretching polypropylene film.
Above-mentioned purpose of the present utility model is to realize by following technological means.
The utility model provides a kind of multilayer bidirectional stretching polypropylene film, a top layer of wherein said multilayer bidirectional stretching polypropylene film is the temperature-sensitive adhesive layer, the thickness of wherein said multilayer bidirectional stretching polypropylene film is 12-80 μ m, and wherein said bondline thickness is 0.8-10 μ m.
And the material of adhesive layer is selected from polyethylene, ethylenic copolymer, ionomer.
Wherein said polyethylene be selected from fusing point between 50-120 ℃, melt index be 0.04-30g/10min (190 ℃, the blend of polyethylene 2.16kg), ethylene-alpha-olefin copolymer or they and Petropols; The therein ethylene base co-polymer is selected from ethylene-vinyl acetate copolymer (EVA), ethylene-vinyl alcohol copolymer (EVAL), ethylene-ethyl acrylate copolymer (EEA), ethylene-methyl acrylate copolymer (EMA), ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), ethylene-methyl acrylate-acrylic ternary copolymer, ethene-copolymer-maleic anhydride, ethene-vinyl acetate-carbonyl copolymer (E-VA-CO), and is 0.5-30% by weight with the content of the monomer of ethylene copolymer in the described ethylenic copolymer; Described ionomer is ethene-(methyl) acrylates copolymer.
Ionomer is to introduce metal ions such as sodium, zinc, potassium in ethene-(methyl) acrylic copolymer (EAA or EMAA), the polymer that forms by ionic crosslinking.
Described bidirectional stretching polypropylene film wherein further comprises at least one acrylic resin intermediate layer.
Described acrylic resin contains the plasticizer that is selected from Petropols, Tissuemat E, polypropylene wax in the intermediate layer.
Acrylic resin 75-99.5% is contained in weight ratio in wherein said acrylic resin intermediate layer, antistatic master batch 0-5%, plasticizer 0.5-20%, the melt index of described acrylic resin is 0.5-6.0g/10min, described antistatic master batch is compound amine or ester class antistatic master batch.
Described bidirectional stretching polypropylene film wherein further comprises the acrylic resin bottom.
Described acrylic resin bottom contains the 95-100% polypropylene in weight ratio, the anti-stick masterbatch that connects of 0-5%.
The prepared multi-function double-way stretched polypropene film of the utility model is compared with common bidirectional stretching polypropylene film, and major advantage has:
1) surface need not coated layer of adhesive again, only needs heating to get final product directly and paper, plastics, and materials such as metal are compound, saved production process, greatly reduce production cost. and the use of also having saved a large amount of adhesives and chemical solvent simultaneously helps environmental protection.
2) top layer of another except that adhesive layer can be made into wet look, also can make lacklustre imitative paper, has satisfied different clients' instructions for use.
3) product variety variation, applied range, thickness provided by the utility model be at three layers of 12-80 μ m (or five layers) coextrusion bidirectional stretching polypropylene film, is widely used in purposes such as compound, printing, packing.
Description of drawings:
Fig. 1 is the structural representation of an embodiment of the utility model;
Fig. 2 is the structural representation of another embodiment of the utility model.
The specific embodiment:
Describe bidirectional stretching polypropylene film provided by the utility model in detail below in conjunction with specific embodiment; described embodiment is in order to explain the utility model better; rather than to the restriction of the utility model claim protection domain; all all belong to the scope that the utility model is asked for protection based on the modification and the change of the utility model basic thought.
The thickness of bidirectional stretching polypropylene film provided by the utility model is 12 μ m as can be seen from Figure 1, it comprises that thickness is the adhesive layer 1 of 0.8 μ m, and the material of adhesive layer is that 80 ℃ of fusing points, melt index are the polyethylene of 2.0g/10min and the blend of Petropols; It comprises that also a thickness is 10.4 μ m acrylic resin intermediate layers 2, and 80% acrylic resin HP 425J (melt index 3.1g/10min), antistatic master batch 5%, plasticizer 15% are contained in weight ratio in described acrylic resin intermediate layer; Comprise also that wherein thickness is 0.8 μ m acrylic resin bottom 3, described acrylic resin bottom contains 95% polypropylene HP 425J (melt index 3.1g/10min) in weight ratio, the 5% anti-stick masterbatch that connects.
Embodiment 2 (five layers co-structured)
The thickness of bidirectional stretching polypropylene film provided by the utility model is 80 μ m as can be seen from Figure 2, and it comprises that thickness is the adhesive layer 4 of 5 μ m, and the material of adhesive layer is that 120 ℃ of fusing points, melt index are the ethylene-alpha-olefin copolymer of 30g/10min; It comprises that also thickness is that 90% acrylic resin HP 425J (is contained in weight ratio in the acrylic resin intermediate layer 5 of 15 μ m, antistatic master batch 3%, plasticizer 7%), thickness is that 75% acrylic resin HP425J (is contained in weight ratio in the acrylic resin intermediate layer 6 of 40 μ m, antistatic master batch 5%, plasticizer 20%), the acrylic resin intermediate layer 7 of 15 μ m (containing 99.5% acrylic resin HP425J, plasticizer 0.5%) in weight ratio; Comprise also that wherein thickness is 5 μ m acrylic resin bottoms 8, described acrylic resin bottom contains 99% acrylic resin HP425J in weight ratio, the 1% anti-stick masterbatch that connects.
Claims (4)
1. multilayer bidirectional stretching polypropylene film, it is characterized in that: a top layer of described multilayer bidirectional stretching polypropylene film is the temperature-sensitive adhesive layer, the thickness of described multilayer bidirectional stretching polypropylene film is 12-80 μ m, and described bondline thickness is 0.8-10 μ m.
2. multilayer bidirectional stretching polypropylene film as claimed in claim 1 is characterized in that: and the material of adhesive layer is selected from polyethylene, ethylenic copolymer, ionomer.
3. multilayer bidirectional stretching polypropylene film as claimed in claim 2 is characterized in that: further comprise at least one acrylic resin intermediate layer.
4. multilayer bidirectional stretching polypropylene film as claimed in claim 1 is characterized in that: further comprise an acrylic resin bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201273228U CN201102335Y (en) | 2007-08-10 | 2007-08-10 | Multi-layer biaxial tension polypropylene film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201273228U CN201102335Y (en) | 2007-08-10 | 2007-08-10 | Multi-layer biaxial tension polypropylene film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201102335Y true CN201102335Y (en) | 2008-08-20 |
Family
ID=39949355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201273228U Expired - Lifetime CN201102335Y (en) | 2007-08-10 | 2007-08-10 | Multi-layer biaxial tension polypropylene film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201102335Y (en) |
-
2007
- 2007-08-10 CN CNU2007201273228U patent/CN201102335Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080820 |