CN2875805Y - Tearable composite film - Google Patents
Tearable composite film Download PDFInfo
- Publication number
- CN2875805Y CN2875805Y CN 200520047098 CN200520047098U CN2875805Y CN 2875805 Y CN2875805 Y CN 2875805Y CN 200520047098 CN200520047098 CN 200520047098 CN 200520047098 U CN200520047098 U CN 200520047098U CN 2875805 Y CN2875805 Y CN 2875805Y
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- CN
- China
- Prior art keywords
- film
- resin film
- vistanex
- composite membrane
- organic resin
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- 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.)
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Abstract
The utility model which relates to an easy-to-tear compound film is characterized in that the combination of organic resin film which is rough-processed in the surface and a heat sealing layer which is made of polyolefin resin. The utility has the advantages of bare-handed tearability in any direction of the compound film owing to the use of organic resin film which is processed with the mechanic method to rough the surface and to form the micro cracks and holes, and is easier to tear than the rigid organic resin film on the surface which is not processed roughly.
Description
Technical field
The utility model relates to a kind of composite membrane that easily tears, and more particularly, relates to a kind of that be used to make packaging bag and can belong to field of packaging material at the free-hand composite membrane of opening of tearing of any one direction.
Background technology
The existing composite membrane that is composited by the rigidity organic resin film, owing to cannot free-handly tear and open, so the packaging bag that manufactures will increase specifically created breach or crack and reach the purpose of opening easily, as in its side precalculated position recess being set, or the precalculated position, lower end forms zigzag gauffer etc. thereon.Its defective is to need could realize by specific process units, and must just can open at ad-hoc location.In addition, because there is recess at the edge of packaging bag own, exist by the unexpected possibility of opening.
With the immediate prior art of the utility model be that number of patent application is respectively 02809645.2 and 02821331.9 Chinese patent, they all relate to a kind of packaging bag, a certain privileged site of packaging bag are handled, to reach the effect of opening easily.Yet the problem that exists is:
(1) the sack position of opening easily is this privileged site, rather than any part.
(2) need printing word to point out to open easily the position, for the user, open the package and to find this position earlier, and for the packaging bag of not printing any sign, the user just can't know where open easily.
(3) they can't have the effect of opening easily equally at heat sealing part, and are limited to the just easily property opened of part position, and the packaging bag shape also is only limited to back of the body envelope and three banding bags.
Summary of the invention
To be that invention is a kind of be suitable for making packaging bag to the purpose of this utility model, its any position, packaging bag edge can free-handly tear open easily tear composite membrane.
For realizing above purpose, the technical solution of the utility model provides a kind of composite membrane that easily tears, and it is characterized in that, is composited through the rigidity organic resin film of coarse processing and the hot sealing layer that vistanex constitutes by the surface.
Be provided with adhesive layer between the hot sealing layer that the rigidity organic resin film of the coarse processing of described surface process and vistanex constitute.
Be provided with barrier layer between the hot sealing layer that the rigidity organic resin film of the coarse processing of described surface process and vistanex constitute, it is bonding to pass through adhesive layer between the rigidity organic resin film of barrier layer and the coarse processing of surface process and the hot sealing layer that vistanex constitutes.
Any in polyolefin resin film, oriented polyester based resin film, oriented polyamide resin film and their aluminizer that described surperficial rigidity organic resin film through coarse processing is biaxial tension, applying silica film, plating di-aluminium trioxide film, the coating polyvinylidene chloride film.
Described adhesive layer is any in polyester-urethane resin, polyethers-urethane resin, isocyanate resin, vistanex and the unsaturated carboxylic acid-modified vistanex.
The hot sealing layer that described vistanex constitutes is acrylic resin or one of polypropylene modification resin, polyvinyl resin and PE modified resin or their mixture.
Described barrier layer is any in aluminium foil, aluminizer, applying silica film, plating di-aluminium trioxide film, coating polyvinylidene chloride film, ethylene-vinyl alcohol copolymer, the fluoropolymer polymer.
The utility model adopts rigidity organic resin film surface to adopt mechanical processing method to make its rough surface, and form micro-crack and (or) micropore, specific surface is not torn easily through the rigidity organic resin film of coarse processing, and any one direction of the composite membrane of making can free-handly be torn and be opened.
The utility model has the advantages that any position, packaging bag edge made from composite membrane can free-handly be torn opens.
Description of drawings
Fig. 1 is a kind of structure of composite membrane schematic diagram that easily tears;
Fig. 2 is embodiment 2 structural representations;
Fig. 3 is embodiment 3 structural representations;
Fig. 4 is embodiment 4 structural representations.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, be a kind of structure of composite membrane schematic diagram that easily tears, a kind of composite membrane that easily tears comprises: rigidity organic resin film 1 is 12 microns for its thickness of biaxially oriented polyester film; Hot sealing layer 3 is the low density polyethylene (LDPE) of 30 microns of thickness.This easily tears composite membrane and takes following technology manufacturing to form:
At first biaxially oriented polyester film 1 is carried out mechanical means and handles and to make its rough surface, and form micro-crack and (or) micropore;
Secondly biaxially oriented polyester film 1 employing after will handling is extruded compounding machine and is easily torn composite membrane in 3 formation of surface recombination one deck low density polyethylene (LDPE).
As shown in Figure 2, a kind of composite membrane that easily tears comprises: rigidity organic resin film 1 is the biaxial stretching polyester metallized film, and its thickness is 12 microns; Hot sealing layer 3 is 40 microns for its thickness of LLDPE; Between rigidity organic film 1 and hot sealing layer 3 is adhesive layer 2, is polyester-urethane polyurethane binder of 3 micron thickness.This easily tears composite membrane and takes following technology manufacturing to form:
At first, biaxial stretching polyester metallized film 1 adopts mechanical processing method to make its rough surface, and form micro-crack and (or) micropore.
Secondly, biaxial stretching polyester metallized film 1 at surperficial coated polyester-urethane polyurethane binder 2, easily tears composite membrane through after the oven for drying polyester-urethane polyurethane binder 2 and linear low-density polyethylene film 3 being carried out bonding formation by dry compound machine.
As shown in Figure 3, be a kind of composite membrane that easily tears, for the barrier that improves composite membrane can also increase one deck or which floor barrier layer.
A surface of film is a rigidity organic resin film 1, and biaxially oriented polyester film thickness is 12 microns, and another surface heat seal 3 of film is a LLDPE, and its thickness is 40 microns; What be positioned at rigidity organic film 1 and hot sealing layer 3 centres is barrier layer 4, is the soft aluminium foil of 7 micron thickness; Be adhesive layer 2 between rigidity organic resin film 1 and the barrier layer 4, be polyester-urethane polyurethane binder; Be adhesive layer 2 between hot sealing layer 3 and the barrier layer 4, be polyester-urethane polyurethane binder.This easily tears composite membrane and takes following technology manufacturing to form:
A) biaxially oriented polyester film 1 adopts mechanical processing method to make its rough surface, and form micro-crack and (or) micropore.
B) with biaxially oriented polyester film 1 by dry compound machine at surperficial coated polyester-urethane polyurethane binder 2, through polyester-urethane polyurethane binder 2 and soft aluminium foil 4 being carried out bonding formation semi-finished product after the oven for drying;
C) with half-finished aluminium foil 4 surfaces by dry compound machine coated polyester-urethane polyurethane binder 2, easily tear composite membrane through after the oven for drying polyester-urethane polyurethane binder 2 and linear low-density polyethylene film 3 being carried out bonding formation.
Embodiment 4
As shown in Figure 4, be a kind of composite membrane that easily tears, a surface rigidity organic resin film 1 of film is a biaxially oriented polyester film, and its thickness is 12 microns; Another surface heat seal 3 of film is a LLDPE, and its thickness is 30 microns; What be positioned at rigidity organic film 1 and hot sealing layer 3 centres is barrier layer 4, is the soft aluminium foil of 7 micron thickness; Adhesive layer 2 near rigidity organic resin film 1 one sides between rigidity organic resin film 1 and the barrier layer 4 is polyester-urethane polyurethane binder; Adhesive layer 5 near barrier layer 4 one sides between rigidity organic resin film 1 and the barrier layer 4 is a low density polyethylene (LDPE); Adhesive layer 2 between hot sealing layer 3 and the barrier layer 4 is polyester-urethane polyurethane binder.This easily tears composite membrane and takes following technology manufacturing to form:
A) biaxially oriented polyester film 1 adopts mechanical processing method to make its rough surface, and form micro-crack and (or) micropore.
B) with biaxially oriented polyester film 1 by extruding compounding machine, through oven for drying at surperficial coated polyester-urethane polyurethane binder 2.
C) by extruder low density polyethylene (LDPE) resin 5 is heated to be molten condition, the low density polyethylene (LDPE) resin 5 that biaxially oriented polyester film 1 is scribbled polyester-urethane polyurethane binder 2 surfaces and molten condition carries out bonding formation semi-finished product with soft aluminium foil 4.
D) with half-finished aluminium foil 4 surfaces by extruding compounding machine coated polyester-urethane polyurethane binder 2, through oven for drying.
E) by extruder linear low density polyethylene resin is heated to be molten condition, is coated on aluminium foil 4 surface formation as hot sealing layer 3 and easily tears composite membrane.
Claims (8)
1. one kind is easily torn composite membrane, it is characterized in that, is composited through the rigidity organic resin film (1) of coarse processing and the hot sealing layer (3) of vistanex formation by the surface.
2. a kind of composite membrane that easily tears according to claim 1 is characterized in that, is provided with adhesive layer (2) between the hot sealing layer (3) of surface through the rigidity organic resin film (1) of coarse processing and vistanex formation.
3. a kind of composite membrane that easily tears according to claim 2, it is characterized in that, be provided with barrier layer (4) between the hot sealing layer (3) that constitutes through the rigidity organic resin film (1) of coarse processing and vistanex on the surface, it is bonding to pass through adhesive layer (2) between the hot sealing layer (3) through the rigidity organic resin film (1) of coarse processing and vistanex formation of barrier layer (4) and surface.
4. a kind of composite membrane that easily tears according to claim 3 is characterized in that, barrier layer (4) and surface are through bonding by two-layer adhesive layer (2) between the rigidity organic resin film (1) of coarse processing.
5. according to claim 1 or 2 or 3 described a kind of composite membranes that easily tear, it is characterized in that the rigidity organic resin film (1) of the coarse processing of described surface process is for any in the polyolefin resin film of biaxial tension, oriented polyester based resin film, oriented polyamide resin film and their aluminizer, applying silica film, plating di-aluminium trioxide film, the coating polyvinylidene chloride film.
6. according to claim 2 or 3 described a kind of composite membranes that easily tear, it is characterized in that described adhesive layer (2) is any in polyester-urethane resin, polyethers-urethane resin, isocyanate resin, vistanex and the unsaturated carboxylic acid-modified vistanex.
7. according to claim 1 or 2 or 3 described a kind of composite membranes that easily tear, it is characterized in that the hot sealing layer (3) that described vistanex constitutes is acrylic resin, polypropylene modification resin, polyvinyl resin, PE modified resin or their mixture.
8. a kind of composite membrane that easily tears according to claim 3, it is characterized in that described barrier layer (4) is any in aluminium foil, aluminizer, applying silica film, plating di-aluminium trioxide film, coating polyvinylidene chloride film, ethylene-vinyl alcohol copolymer, the fluoropolymer polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047098 CN2875805Y (en) | 2005-12-01 | 2005-12-01 | Tearable composite film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047098 CN2875805Y (en) | 2005-12-01 | 2005-12-01 | Tearable composite film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2875805Y true CN2875805Y (en) | 2007-03-07 |
Family
ID=37819049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520047098 Expired - Lifetime CN2875805Y (en) | 2005-12-01 | 2005-12-01 | Tearable composite film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2875805Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111483198A (en) * | 2020-05-07 | 2020-08-04 | 广东美士达药包材料股份有限公司 | Easy-to-tear composite film and preparation method thereof |
-
2005
- 2005-12-01 CN CN 200520047098 patent/CN2875805Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111483198A (en) * | 2020-05-07 | 2020-08-04 | 广东美士达药包材料股份有限公司 | Easy-to-tear composite film and preparation method thereof |
| CN111483198B (en) * | 2020-05-07 | 2021-02-23 | 广东美士达药包材料股份有限公司 | Easy-to-tear composite film and preparation method thereof |
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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 |
Granted publication date: 20070307 |
|
| EXPY | Termination of patent right or utility model |