CN202138023U - Biaxially oriented polypropylene base film used for manufacturing bags - Google Patents
Biaxially oriented polypropylene base film used for manufacturing bags Download PDFInfo
- Publication number
- CN202138023U CN202138023U CN201120249403U CN201120249403U CN202138023U CN 202138023 U CN202138023 U CN 202138023U CN 201120249403 U CN201120249403 U CN 201120249403U CN 201120249403 U CN201120249403 U CN 201120249403U CN 202138023 U CN202138023 U CN 202138023U
- Authority
- CN
- China
- Prior art keywords
- layer
- base film
- biaxially oriented
- oriented polypropylene
- polypropylene base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a polypropylene base film, in particular to a biaxially oriented polypropylene base film used for manufacturing bags, and mainly solves the technical problems that as the sealing strength of the base film in the prior art is insufficient, the use range of a product is limited, the cost of the product can be increased if a bonding layer is combined to the base film, and the like. The biaxially oriented polypropylene base film comprises a core layer (1), wherein, an upper surface layer (2) and a lower surface layer (3) are respectively arranged on the upper surface and the lower surface of the core layer. The biaxially oriented polypropylene base film is characterized in that the core layer (1), the upper surface layer (2) and the lower surface layer (3) form a whole through holt-melting co-extrusion, wherein, the upper surface layer is a corona layer, and the lower surface layer is a bag-manufacturing and sealing layer.
Description
Technical field
The utility model relates to a kind of polypropylene basement membrane, especially relates to a kind of bidirection drawed BOPP film that is used for bag.
Background technology
At present, the known basement membrane that is used for bag is the basement membrane by polyethylene (PE), PP (HOPP) raw material production.Chinese patent discloses a kind of high heat insulating two-way oriented polypropylene basement membrane, and (Granted publication number: CN200975586), its basement membrane is by upper epidermis, sandwich layer, the top layer constitutes down, and sandwich layer is between upper and lower top layer; The thickness on upper epidermis, following top layer is respectively the 5-10% of basement membrane thickness.Chinese patent also discloses a kind of Polywoven Bag composite bidirectional stretching polypropylene basement membrane (Granted publication number: CN200981364) that is used for; It comprises the intermediate layer; Constituting by upper strata and lower floor respectively up and down of intermediate layer; The thickness of upper strata, lower floor is respectively the 6-10% of intermediate layer thickness, and upper strata, intermediate layer, lower floor's major ingredient all adopt polypropylene plastics.But utilize these two kinds of basement membranes to carry out bag; Though finally can reach packaging protecting effect, but this type of basement membrane sealing strength is not enough or can not directly use necessary compound one deck adhesive layer when requiring to use to the pack commodity; Just can carry out bag; In order to realize the packaging protecting effect to the pack commodity, sealing strength can make the scope of application of product be restricted inadequately, and compound one deck adhesive layer has then improved the cost of product.
The utility model content
The utility model provides a kind of bidirection drawed BOPP film that is used for bag; It mainly is to solve existing in prior technology basement membrane sealing strength the scope of application of product is restricted, if involution one deck adhesive layer then can improve the technical problems such as cost of product.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals:
The bidirection drawed BOPP film that is used for bag of the utility model; Comprise sandwich layer, the upper and lower surfaces of sandwich layer is respectively equipped with upper epidermis, following top layer, and described sandwich layer, upper epidermis, following top layer become one through the hot melt co-extrusion; Wherein upper epidermis is the corona layer, and following top layer is a bag involution layer.To above-mentioned technical problem, the utility model just descends the top layer to add a kind of modified additive at the involution layer; Improve the involution fastness of involution layer; Make this kind basement membrane can directly carry out involution bag and involution fastness height, thereby, widened product applications for downstream user reduces cost.
Utilize this kind basement membrane can process the product of direct bag, thereby reach protective effect products to be packaged.Basement membrane can cut into the finished product of different specification size (length and width) according to user's demands of different.Also can utilize different stretch processes to produce the basement membrane of different-thickness.
As preferably, described upper epidermis, the thickness on top layer is respectively 2%-5% of whole basement membrane thickness down, like this product sealing strength the best.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the utility model.
Parts, position and numbering among the figure: sandwich layer 1, upper epidermis 2, following top layer 3.
The specific embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technical scheme of the utility model.
Embodiment: the bidirection drawed BOPP film that is used for bag of this example; Like Fig. 1; One deck sandwich layer 1 is arranged, and the upper and lower surfaces of sandwich layer is respectively equipped with upper epidermis 2, following top layer 3, and sandwich layer, upper epidermis, following top layer become one through the hot melt co-extrusion; Wherein upper epidermis is the corona layer, and following top layer is a bag involution layer.The thickness on upper epidermis, following top layer is respectively 3% of whole basement membrane thickness.
During use, basement membrane can cut into the finished product of different specification size according to user's demands of different, also can utilize different stretch processes to produce the basement membrane of different-thickness.
The above is merely the specific embodiment of the utility model; But the architectural feature of the utility model is not limited thereto; Any those skilled in the art is in the field of the utility model, and variation of being done or modification all are encompassed among the claim of the utility model.
Claims (2)
1. bidirection drawed BOPP film that is used for bag; Comprise sandwich layer (1); The upper and lower surfaces of sandwich layer is respectively equipped with upper epidermis (2), following top layer (3); It is characterized in that described sandwich layer (1), upper epidermis (2), following top layer (3) become one through the hot melt co-extrusion, wherein upper epidermis is the corona layer, and following top layer is a bag involution layer.
2. the bidirection drawed BOPP film that is used for bag according to claim 1 is characterized in that the thickness on described upper epidermis (2), following top layer (3) is respectively 2%-5% of whole basement membrane thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120249403U CN202138023U (en) | 2011-07-15 | 2011-07-15 | Biaxially oriented polypropylene base film used for manufacturing bags |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120249403U CN202138023U (en) | 2011-07-15 | 2011-07-15 | Biaxially oriented polypropylene base film used for manufacturing bags |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202138023U true CN202138023U (en) | 2012-02-08 |
Family
ID=45549099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120249403U Expired - Fee Related CN202138023U (en) | 2011-07-15 | 2011-07-15 | Biaxially oriented polypropylene base film used for manufacturing bags |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202138023U (en) |
-
2011
- 2011-07-15 CN CN201120249403U patent/CN202138023U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20140715 |
|
| EXPY | Termination of patent right or utility model |