CN212073259U - VAP unidirectional breathable film - Google Patents
VAP unidirectional breathable film Download PDFInfo
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- CN212073259U CN212073259U CN202020499876.6U CN202020499876U CN212073259U CN 212073259 U CN212073259 U CN 212073259U CN 202020499876 U CN202020499876 U CN 202020499876U CN 212073259 U CN212073259 U CN 212073259U
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Abstract
The utility model discloses an one-way ventilated membrane of VAP, including drawing of patterns cloth layer, first adhesive layer, tensile layer, semi-permeable membrane layer and demoulding structure, it has first adhesive layer to bond on the outer wall of drawing of patterns cloth layer one side, and is provided with the tensile layer on the outer wall that drawing of patterns cloth layer one side was kept away from to first adhesive layer to it has the second adhesive layer to bond on the outer wall that first adhesive layer one side was kept away from to the tensile layer, be provided with semi-permeable membrane layer on the outer wall that tensile layer one side was kept away from to the second adhesive layer, semi-permeable membrane layer is close to one side and second adhesive layer fixed connection of second adhesive layer, and semi-permeable membrane layer's inside all is provided with equidistant bleeder vent to semi-permeable membrane layer's top is. The utility model discloses convenience when not only having improved the product drawing of patterns, extensibility and tensile strength when having improved the ventilated membrane use, reduced the damage of ventilated membrane, improved the wear resistance when ventilated membrane uses moreover, prolonged the life of ventilated membrane.
Description
Technical Field
The utility model relates to a ventilated membrane technical field specifically is an one-way ventilated membrane of VAP.
Background
The VAP one-way breathable film is a material capable of blocking resin and allowing gas to permeate, consists of two parts of a release cloth and a semipermeable film, is applied to a vacuum resin introduction process and a wet vacuum bag forming process (prepreg or hand lay-up), and can continuously extract air and volatile matters to prevent loss of resin in a laminated layer.
The existing unidirectional breathable films in the market are various in types and can basically meet the use requirements of people, but certain defects still exist, and the specific problems are as follows.
(1) The existing one-way breathable film is usually inconvenient to separate from a product when in use, so that the subsequent demoulding work is not facilitated;
(2) when the existing unidirectional breathable film is used, the ductility is relatively common, and the tearing and damage are easy to occur, so that an improved space exists;
(3) the wear resistance of the existing unidirectional breathable film is relatively general when in use, so that the service life of the breathable film is not facilitated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an one-way ventilated membrane of VAP to provide the inconvenient and product separation of one-way ventilated membrane in solving above-mentioned background art, the problem comparatively general with the wearability of ductility.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a one-way ventilated membrane of VAP, includes drawing of patterns cloth layer, first adhesive layer, tensile layer, semi-permeable rete and demoulding structure, it has first adhesive layer to bond on the outer wall of drawing of patterns cloth layer one side, and is provided with the tensile layer on the outer wall of drawing of patterns cloth layer one side is kept away from to first adhesive layer, and the tensile layer is close to one side and the first adhesive layer fixed connection of first adhesive layer to it has second adhesive layer to bond on the outer wall of first adhesive layer one side is kept away from to the tensile layer, be provided with semi-permeable rete on the outer wall of tensile layer one side is kept away from to the second adhesive layer, and semi-permeable rete is close to one side and the second adhesive layer fixed connection of second adhesive layer, and semi-permeable rete inside all is provided with equidistant bleeder vent to semi.
Preferably, a fifth adhesive layer is bonded on the outer wall of the side, away from the first adhesive layer, of the release fabric layer, and a modified polypropylene resin is arranged on the outer wall of the side, away from the release fabric layer, of the fifth adhesive layer, and the side, close to the fifth adhesive layer, of the modified polypropylene resin is fixedly connected with the fifth adhesive layer, so that the strength and toughness of the breathable film are improved.
Preferably, the inside on tensile layer is provided with the extension cavity, and the inside bottom of extension cavity bonds and has the third adhesive layer, one side and the inner wall fixed connection who extends the cavity on third adhesive layer to the inside top of extension cavity bonds and has the fourth adhesive layer, and one side and the inner wall fixed connection who extends the cavity on fourth adhesive layer are convenient for fix first elastic fiber strip and second elastic fiber strip.
Preferably, arc-shaped lugs, Teflon coating, air gaps and contact top surfaces are sequentially arranged inside the demoulding structure, and arc-shaped lugs at equal intervals are fixed at the top end of the semi-permeable film layer, so that the subsequent demoulding operation of a product is facilitated.
Preferably, the top end of the arc-shaped bump is provided with a contact top surface, and the outer wall of the arc-shaped bump is coated with Teflon coating to separate the product from the breathable film.
Preferably, the top end of the semi-permeable film layer on the inner side of the arc-shaped bump is provided with air gaps at equal intervals, and the air gaps are matched with the air holes to provide air permeable space for the product.
Preferably, the first elastic fiber strips are arranged at equal intervals in the extension cavity below the fourth adhesive layer, the bottom ends of the first elastic fiber strips are fixedly connected with the top end of the third adhesive layer, and the top ends of the first elastic fiber strips are fixedly connected with the bottom end of the fourth adhesive layer and used for tensile work of the breathable film.
Preferably, the extension cavity on one side of the first elastic fiber strip is internally provided with second elastic fiber strips at equal intervals, the bottom ends of the second elastic fiber strips are fixedly connected with the top end of the third adhesive layer, the top ends of the second elastic fiber strips are fixedly connected with the bottom end of the fourth adhesive layer, the second elastic fiber strips are mutually crossed with the first elastic fiber strips, and the second elastic fiber strips and the first elastic fiber strips are provided with extension gaps at equal intervals to provide extensibility for the breathable film.
Preferably, the modified polypropylene resin is fixed with the fine layer of compound glass on keeping away from the outer wall of fifth adhesive layer one side, and the fine layer of compound glass is mutually supported with modified polypropylene resin, and is fixed with the polyester film layer on the fine layer of compound glass keeps away from the outer wall of modified polypropylene resin one side, and the polyester film layer is mutually supported with the fine layer of compound glass for increase the wear resistance of ventilated membrane.
Compared with the prior art, the beneficial effects of the utility model are that: the VAP unidirectional breathable film not only improves the convenience of demoulding of products, improves the extensibility and tensile property of the breathable film when in use, reduces the damage of the breathable film, but also improves the wear resistance of the breathable film when in use, and prolongs the service life of the breathable film;
(1) the arc-shaped bump, the Teflon coating, the air permeable gap and the contact top surface are arranged, the arc-shaped bump fixed at the top end of the semi-permeable membrane layer is in contact with a product through the contact top surface, the product is separated from the air permeable membrane by the Teflon coating, meanwhile, the good air permeable space is provided for the product through the air permeable gap at the inner side of the arc-shaped bump, and the air permeable effect is achieved by matching the action of the air permeable hole in the semi-permeable membrane layer, so that the convenience of demoulding of the product is improved;
(2) by arranging the tensile layer, the extension cavity, the third adhesive layer, the fourth adhesive layer, the first elastic fiber strip, the second elastic fiber strip and the extension gap, the first elastic fiber strip and the second elastic fiber strip in the extension cavity in the tensile layer have good tensile property, and the extension gap is formed between the first elastic fiber strip and the second elastic fiber strip to provide a space for extension of the first elastic fiber strip and the second elastic fiber strip, so that the extension property and the tensile property of the breathable film in use are improved, and further the damage of the breathable film is reduced;
(3) through being provided with the fine layer of polyester film layer, compound glass, modified polypropylene resin and fifth adhesive layer, the polyester film layer has that tensile strength is big, characteristics that tear strength is high, and the fine layer of compound glass and modified polypropylene resin's setting up makes the ventilated membrane have good intensity and toughness simultaneously to wear resistance when having improved the ventilated membrane and having used has prolonged the life of ventilated membrane.
Drawings
Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;
fig. 2 is a schematic side view of the cross-sectional structure of the present invention;
fig. 3 is a schematic view of a partial cross-sectional enlarged structure of the tensile layer of the present invention;
fig. 4 is an enlarged schematic structural view of a point a in fig. 1 according to the present invention;
fig. 5 is a schematic view of the membrane releasing structure of the present invention.
In the figure: 1. demolding the cloth layer; 2. a first adhesive layer; 3. a tensile layer; 4. a semi-permeable membrane layer; 5. a demoulding structure; 501. an arc-shaped bump; 502. teflon coating; 503. a ventilation gap; 504. a contact top surface; 6. air holes are formed; 7. a second adhesive layer; 8. extending the cavity; 9. a third adhesive layer; 10. a fourth adhesive layer; 11. a first elastic fiber strip; 12. a second elastic fiber strip; 13. an extended void; 14. a polyester film layer; 15. compounding a glass fiber layer; 16. a modified polypropylene resin; 17. a fifth adhesive layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides an embodiment: a VAP one-way breathable film comprises a demoulding cloth layer 1, a first adhesive layer 2, a tensile layer 3, a semi-permeable film layer 4 and a demoulding structure 5, wherein the first adhesive layer 2 is bonded on the outer wall of one side of the demoulding cloth layer 1, the tensile layer 3 is arranged on the outer wall of one side, far away from the demoulding cloth layer 1, of the first adhesive layer 2, one side, close to the first adhesive layer 2, of the tensile layer 3 is fixedly connected with the first adhesive layer 2, and a second adhesive layer 7 is bonded on the outer wall of one side, far away from the first adhesive layer 2, of the tensile layer 3;
a fifth adhesive layer 17 is bonded on the outer wall of the side, far away from the first adhesive layer 2, of the demoulding cloth layer 1, a modified polypropylene resin 16 is arranged on the outer wall of the side, far away from the demoulding cloth layer 1, of the fifth adhesive layer 17, and the side, close to the fifth adhesive layer 17, of the modified polypropylene resin 16 is fixedly connected with the fifth adhesive layer 17 and used for increasing the strength and toughness of the breathable film;
the outer wall of the modified polypropylene resin 16, which is far away from the fifth adhesive layer 17, is fixed with a composite glass fiber layer 15, the composite glass fiber layer 15 is matched with the modified polypropylene resin 16, the outer wall of the composite glass fiber layer 15, which is far away from the modified polypropylene resin 16, is fixed with a polyester film layer 14, and the polyester film layer 14 is matched with the composite glass fiber layer 15 to increase the wear resistance of the breathable film;
an extension cavity 8 is arranged in the tensile layer 3, a third adhesive layer 9 is bonded at the bottom end in the extension cavity 8, one side of the third adhesive layer 9 is fixedly connected with the inner wall of the extension cavity 8, a fourth adhesive layer 10 is bonded at the top end in the extension cavity 8, and one side of the fourth adhesive layer 10 is fixedly connected with the inner wall of the extension cavity 8, so that the first elastic fiber strip 11 and the second elastic fiber strip 12 can be conveniently fixed;
the first elastic fiber strips 11 with equal intervals are arranged in the extension cavity 8 below the fourth adhesive layer 10, the bottom ends of the first elastic fiber strips 11 are fixedly connected with the top end of the third adhesive layer 9, and the top ends of the first elastic fiber strips 11 are fixedly connected with the bottom end of the fourth adhesive layer 10 and used for tensile work of the breathable film;
the extending cavity 8 on one side of the first elastic fiber strip 11 is internally provided with second elastic fiber strips 12 at equal intervals, the bottom ends of the second elastic fiber strips 12 are fixedly connected with the top end of the third adhesive layer 9, the top ends of the second elastic fiber strips 12 are fixedly connected with the bottom end of the fourth adhesive layer 10, the second elastic fiber strips 12 are mutually crossed with the first elastic fiber strips 11, and extending gaps 13 at equal intervals are arranged between the second elastic fiber strips 12 and the first elastic fiber strips 11 to provide extensibility for the breathable film;
the outer wall of one side, away from the tensile layer 3, of the second adhesive layer 7 is provided with a semi-permeable membrane layer 4, one side, close to the second adhesive layer 7, of the semi-permeable membrane layer 4 is fixedly connected with the second adhesive layer 7, air holes 6 are formed in the semi-permeable membrane layer 4 at equal intervals, and the top end of the semi-permeable membrane layer 4 is provided with a demoulding structure 5;
the inside of the demoulding structure 5 is sequentially provided with an arc-shaped bump 501, a Teflon coating 502, a ventilation gap 503 and a contact top surface 504, the top ends of the semi-permeable film layers 4 are all fixed with the arc-shaped bumps 501 at equal intervals, the top ends of the arc-shaped bumps 501 are provided with the contact top surface 504, the outer walls of the arc-shaped bumps 501 are coated with the Teflon coating 502, the top ends of the semi-permeable film layers 4 on the inner sides of the arc-shaped bumps 501 are all provided with the ventilation gap 503 at equal intervals, and the ventilation gap 503 is matched with the ventilation holes 6;
The working principle is as follows: when the VAP unidirectional breathable film is used, a worker firstly attaches the VAP unidirectional breathable film to the outside of a product, in the process, the surface of the semi-permeable film layer 4 faces the glass fiber lamination layer, wherein an arc-shaped bump 501 fixed at the top end of the semi-permeable film layer 4 is in contact with the product through a contact top surface 504, the Teflon coating 502 separates the product from the breathable film, meanwhile, a good breathable space is provided for the product through a breathable gap 503 at the inner side of the arc-shaped bump 501, the breathable effect is achieved by matching with the effect of the breathable holes 6 in the semi-permeable film layer 4, so that the convenience of demoulding of the product is improved, then, the first elastic fiber strip 11 and the second elastic fiber strip 12 in the extension cavity 8 in the tensile layer 3 have good tensile property, and due to the existence of the extension gap 13 between the first elastic fiber strip 11 and the second elastic fiber strip 12, a space is provided for the extension of the first elastic fiber strip 11 and the second elastic fiber, thereby extensibility and tensile strength when having improved the ventilated membrane and using, and then reduced the damage of ventilated membrane, finally, polyester film layer 14 has that tensile strength is big, characteristics that tear strength is high, and the fine layer 15 of compound glass and modified polypropylene resin 16's setting up makes the ventilated membrane have good intensity and toughness simultaneously to wear resistance when having improved the ventilated membrane and using has prolonged the life of ventilated membrane, the work of accomplishing the one-way ventilated membrane of VAP.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. The utility model provides a one-way ventilated membrane of VAP, includes drawing of patterns cloth layer (1), first adhesive layer (2), tensile layer (3), semi-permeable membrane layer (4) and demoulding structure (5), its characterized in that: a first adhesive layer (2) is bonded on the outer wall of one side of the demoulding cloth layer (1), and the outer wall of one side of the first adhesive layer (2) far away from the demoulding cloth layer (1) is provided with a tensile layer (3), one side of the tensile layer (3) close to the first adhesive layer (2) is fixedly connected with the first adhesive layer (2), and a second adhesive layer (7) is bonded on the outer wall of the tensile layer (3) far away from the first adhesive layer (2), the outer wall of one side of the second adhesive layer (7) far away from the tensile layer (3) is provided with a semi-permeable membrane layer (4), one side of the semi-permeable membrane layer (4) close to the second adhesive layer (7) is fixedly connected with the second adhesive layer (7), and the semi-permeable membrane layer (4) is internally provided with air holes (6) at equal intervals, and the top end of the semi-permeable membrane layer (4) is provided with a demoulding structure (5).
2. A VAP unidirectional breathable film according to claim 1, characterized in that: the outer wall of one side, far away from the first adhesive layer (2), of the demolding cloth layer (1) is bonded with a fifth adhesive layer (17), the outer wall of one side, far away from the demolding cloth layer (1), of the fifth adhesive layer (17) is provided with modified polypropylene resin (16), and one side, close to the fifth adhesive layer (17), of the modified polypropylene resin (16) is fixedly connected with the fifth adhesive layer (17).
3. A VAP unidirectional breathable film according to claim 1, characterized in that: the inside of tensile layer (3) is provided with extension cavity (8), and the inside bottom of extension cavity (8) bonds and has third adhesive layer (9), one side of third adhesive layer (9) and the inner wall fixed connection of extension cavity (8) to the inside top of extension cavity (8) is provided with fourth adhesive layer (10), one side of fourth adhesive layer (10) and the inner wall fixed connection of extension cavity (8).
4. A VAP unidirectional breathable film according to claim 1, characterized in that: arc-shaped bumps (501), Teflon coating (502), air gaps (503) and contact top surfaces (504) are sequentially arranged in the demoulding structure (5), and the arc-shaped bumps (501) at equal intervals are fixed at the top end of the semi-permeable film layer (4).
5. A VAP unidirectional breathable film according to claim 4, characterized in that: the top end of the arc-shaped bump (501) is provided with a contact top surface (504), and the outer wall of the arc-shaped bump (501) is coated with Teflon coating (502).
6. A VAP unidirectional breathable film according to claim 4, characterized in that: the top ends of the semi-permeable film layers (4) on the inner sides of the arc-shaped bumps (501) are provided with air permeable gaps (503) at equal intervals, and the air permeable gaps (503) are matched with the air vents (6).
7. A VAP unidirectional breathable film according to claim 3, characterized in that: the inside of the extension cavity (8) below the fourth adhesive layer (10) is provided with first elastic fiber strips (11) at equal intervals, the bottom ends of the first elastic fiber strips (11) are fixedly connected with the top end of the third adhesive layer (9), and the top ends of the first elastic fiber strips (11) are fixedly connected with the bottom end of the fourth adhesive layer (10).
8. A VAP unidirectional breathable film according to claim 7, characterized in that: the inside second elastic fiber strip (12) that all is provided with equidistant of extension cavity (8) of first elastic fiber strip (11) one side, the bottom of second elastic fiber strip (12) and the top fixed connection of third adhesive layer (9), the top of second elastic fiber strip (12) and the bottom fixed connection of fourth adhesive layer (10), second elastic fiber strip (12) and first elastic fiber strip (11) intercrossing to all be provided with equidistant extension space (13) between second elastic fiber strip (12) and first elastic fiber strip (11).
9. A VAP unidirectional breathable film according to claim 2, characterized in that: modified polypropylene resin (16) are kept away from and are fixed with compound fine layer (15) of glass on the outer wall of fifth adhesive layer (17) one side, and compound fine layer (15) of glass mutually supports with modified polypropylene resin (16), and compound fine layer (15) of glass is kept away from and is fixed with polyester film layer (14) on the outer wall of modified polypropylene resin (16) one side, and polyester film layer (14) mutually supports with compound fine layer (15) of glass.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020499876.6U CN212073259U (en) | 2020-04-08 | 2020-04-08 | VAP unidirectional breathable film |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020499876.6U CN212073259U (en) | 2020-04-08 | 2020-04-08 | VAP unidirectional breathable film |
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| CN212073259U true CN212073259U (en) | 2020-12-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116750975A (en) * | 2023-08-21 | 2023-09-15 | 上海玻璃钢研究院有限公司 | Quartz fiber composite material and preparation method thereof |
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2020
- 2020-04-08 CN CN202020499876.6U patent/CN212073259U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116750975A (en) * | 2023-08-21 | 2023-09-15 | 上海玻璃钢研究院有限公司 | Quartz fiber composite material and preparation method thereof |
| CN116750975B (en) * | 2023-08-21 | 2023-10-13 | 上海玻璃钢研究院有限公司 | Quartz fiber composite material and preparation method thereof |
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