CN103692708B - A kind of vacuum bag with segregation and preparation method thereof - Google Patents
A kind of vacuum bag with segregation and preparation method thereof Download PDFInfo
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- CN103692708B CN103692708B CN201310728809.1A CN201310728809A CN103692708B CN 103692708 B CN103692708 B CN 103692708B CN 201310728809 A CN201310728809 A CN 201310728809A CN 103692708 B CN103692708 B CN 103692708B
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Abstract
A kind of vacuum bag with segregation disclosed by the invention, comprises the internal layer of coextru-lamination successively, middle level and skin, and internal layer and skin are mixed by nylon and fluorinated material, and middle level is made up of nylon.Its preparation method comprises the following steps: (1) prepares internal layer, middle level and outer field raw material; (2) the former helical plastic extruder that adds is carried out plastifying fusion; (3) under the barrel internal pressure of spiral plastic extruder and screw rod thrust forward thereof act on simultaneously, the internal layer raw material of melt shape, middle level raw material and outer raw material are transported in the die head of three-layer co-extruded inflation film manufacturing machine, via the die head coextru-lamination of three-layer co-extruded inflation film manufacturing machine, the tubular blank after extruding is blown into tubular vacuum bag through the mouth mould place of three-layer co-extruded inflation film manufacturing machine again.Beneficial effect of the present invention is: ensure that vacuum state is air tight, ensure at high temperature incompatible with composite, and easily peel off after solidification.
Description
Technical field
The present invention relates to plastic sheeting technical field, particularly relate to a kind of vacuum bag with segregation and preparation method thereof, it is shaping that this vacuum bag is applicable to composite fast vacuum.
Background technology
Traditional autoclave vacuum forming technique be nylon vacuum bag film, although can play high temperature resistant, intercept the effect that pressurize is fixed-type, but owing to there is certain compatibility under nylon and composite high temperature, to such an extent as to after composite material solidification, cannot peel off from article surface, must consider in addition to use a series of vacuum aided material such as barrier film, airfelt, but prepare these material complex procedures, cost also significantly increases.
Summary of the invention
An object of the present invention is to provide a kind of vacuum bag with segregation, and this vacuum bag ensures that vacuum state is air tight, incompatible with composite, even if composite material solidification, also easily peels off.
Two of object of the present invention is to provide a kind of above-mentioned preparation method with the vacuum bag of segregation.
Technical problem solved by the invention can realize by the following technical solutions:
Have a vacuum bag for segregation, comprise the internal layer of coextru-lamination successively, middle level and skin, described internal layer and skin are mixed by nylon and fluorinated material, and described middle level is made up of nylon.
In a preferred embodiment of the invention, the nylon in described internal layer and the percentage by weight of fluorinated material are respectively 70% ~ 85% and 15% ~ 30%; Nylon in described skin and the percentage by weight of fluorinated material are respectively 70% ~ 85% and 15% ~ 30%.
In a preferred embodiment of the invention, the nylon in described internal layer, middle level and skin is DSMAkulonF136-C1.
For the preparation of an above-mentioned method with the vacuum bag of segregation, comprise the following steps:
(1) go out internal layer raw material, middle level raw material and outer raw material according to the proportioning component proportion of above-mentioned percentage by weight, internal layer raw material and outer raw material all add a small amount of compatilizer in batch mixing process;
(2) internal layer raw material, middle level raw material and outer raw material are respectively charged in the internal layer of helical plastic extruder, middle level and outer hopper, then through helical plastic extruder plastifying fusion;
(3) under the barrel internal pressure of spiral plastic extruder and screw rod thrust forward thereof act on simultaneously, the internal layer raw material of melt shape, middle level raw material and outer raw material are transported in the die head of three-layer co-extruded inflation film manufacturing machine, via the die head coextru-lamination of three-layer co-extruded inflation film manufacturing machine, the tubular blank after extruding is blown into tubular vacuum bag through the mouth mould place of three-layer co-extruded inflation film manufacturing machine again.
In a preferred embodiment of the invention, the extruder temperature of described screw rod plastic extruder is 220 ~ 240 DEG C, and rotating speed is 15 ~ 80rpm, and extruding tonnage is 15 ~ 30MPa.
In a preferred embodiment of the invention, the temperature of described three-layer co-extruded inflation film manufacturing machine is 235 ~ 240 DEG C, and blow-up ratio is 1.4 ~ 2, and film thickness is 30 ~ 100um, and coiling speed is 30 ~ 60m/min.
Owing to have employed technical scheme as above, beneficial effect of the present invention is: middle level is made up of nylon material, has excellent barrier, ensures that vacuum state is air tight; Internal layer and outer add a small amount of compatilizer by nylon blending fluorinated material, promotes to be uniformly dispersed mutually; Containing nylon in internal layer and skin, therefore internal layer and middle level, there is between skin and middle level good adhesive effect, be unlikely at high temperature layering to occur; Contain fluorinated material in internal layer and skin, ensure at high temperature incompatible with composite, and easily peel off after solidification.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of embodiment 1,2,3.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
Embodiment 1
Be a kind of vacuum bag with segregation of this enforcement see what provide in Fig. 1, figure, comprise the internal layer 1 of coextru-lamination successively, middle level 2 and outer 3, internal layer 1 and outer 3 is mixed by nylon and fluorinated material, and middle level 2 is made up of nylon.Wherein, the nylon in internal layer 1 and the percentage by weight of fluorinated material are respectively 70% and 30%; Nylon in outer 3 and the percentage by weight of fluorinated material are respectively 70% and 30%.In internal layer 1, middle level 2 and outer 3, nylon used is DSMAkulonF136-C1.
Its preparation method comprises the following steps:
(1) go out internal layer raw material, middle level raw material and outer raw material according to the proportioning component proportion of above-mentioned percentage by weight, internal layer raw material and outer raw material all add a small amount of compatilizer in batch mixing process;
(2) internal layer raw material, middle level raw material and outer raw material are respectively charged in the internal layer of helical plastic extruder, middle level and outer hopper, then through helical plastic extruder plastifying fusion, wherein, the extruder temperature of screw rod plastic extruder is 220 DEG C, rotating speed is 15rpm, and extruding tonnage is 15MPa;
(3) under the barrel internal pressure of spiral plastic extruder and screw rod thrust forward thereof act on simultaneously, the internal layer raw material of melt shape, middle level raw material and outer raw material are transported in the die head of three-layer co-extruded inflation film manufacturing machine, via the die head coextru-lamination of three-layer co-extruded inflation film manufacturing machine, tubular blank after extruding is blown into tubular vacuum bag through the mouth mould place of three-layer co-extruded inflation film manufacturing machine again, wherein, the temperature of three-layer co-extruded inflation film manufacturing machine is 235 DEG C, blow-up ratio is 1.4, film thickness is 30um, and coiling speed is 30m/min.
Embodiment 2
Be a kind of vacuum bag with segregation of this enforcement see what provide in Fig. 1, figure, comprise the internal layer 1 of coextru-lamination successively, middle level 2 and outer 3, internal layer 1 and outer 3 is mixed by nylon and fluorinated material, and middle level 2 is made up of nylon.Wherein, the nylon in internal layer 1 and the percentage by weight of fluorinated material are respectively 85% and 15%; Nylon in outer 3 and the percentage by weight of fluorinated material are respectively 85% and 15%.In internal layer 1, middle level 2 and outer 3, nylon used is DSMAkulonF136-C1.
Its preparation method comprises the following steps:
(1) go out internal layer raw material, middle level raw material and outer raw material according to the proportioning component proportion of above-mentioned percentage by weight, internal layer raw material and outer raw material all add a small amount of compatilizer in batch mixing process;
(2) internal layer raw material, middle level raw material and outer raw material are respectively charged in the internal layer of helical plastic extruder, middle level and outer hopper, then through helical plastic extruder plastifying fusion, wherein, the extruder temperature of screw rod plastic extruder is 240 DEG C, rotating speed is 80rpm, and extruding tonnage is 30MPa;
(3) under the barrel internal pressure of spiral plastic extruder and screw rod thrust forward thereof act on simultaneously, the internal layer raw material of melt shape, middle level raw material and outer raw material are transported in the die head of three-layer co-extruded inflation film manufacturing machine, via the die head coextru-lamination of three-layer co-extruded inflation film manufacturing machine, tubular blank after extruding is blown into tubular vacuum bag through the mouth mould place of three-layer co-extruded inflation film manufacturing machine again, wherein, the temperature of three-layer co-extruded inflation film manufacturing machine is 240 DEG C, blow-up ratio is 2, film thickness is 100um, and coiling speed is 60m/min.
Embodiment 3
Be a kind of vacuum bag with segregation of this enforcement see what provide in Fig. 1, figure, comprise the internal layer 1 of coextru-lamination successively, middle level 2 and outer 3, internal layer 1 and outer 3 is mixed by nylon and fluorinated material, and middle level 2 is made up of nylon.Wherein, the nylon in internal layer 1 and the percentage by weight of fluorinated material are respectively 77.5% and 22.5%; Nylon in outer 3 and the percentage by weight of fluorinated material are respectively 77.5% and 22.5%.In internal layer 1, middle level 2 and outer 3, nylon used is DSMAkulonF136-C1.
Its preparation method comprises the following steps:
(1) go out internal layer raw material, middle level raw material and outer raw material according to the proportioning component proportion of above-mentioned percentage by weight, internal layer raw material and outer raw material all add a small amount of compatilizer in batch mixing process;
(2) internal layer raw material, middle level raw material and outer raw material are respectively charged in the internal layer of helical plastic extruder, middle level and outer hopper, then through helical plastic extruder plastifying fusion, wherein, the extruder temperature of screw rod plastic extruder is 230 DEG C, rotating speed is 50rpm, and extruding tonnage is 23MPa;
(3) under the barrel internal pressure of spiral plastic extruder and screw rod thrust forward thereof act on simultaneously, the internal layer raw material of melt shape, middle level raw material and outer raw material are transported in the die head of three-layer co-extruded inflation film manufacturing machine, via the die head coextru-lamination of three-layer co-extruded inflation film manufacturing machine, tubular blank after extruding is blown into tubular vacuum bag through the mouth mould place of three-layer co-extruded inflation film manufacturing machine again, wherein, the temperature of three-layer co-extruded inflation film manufacturing machine is 237 DEG C, blow-up ratio is 1.7, film thickness is 65um, and coiling speed is 45m/min.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (2)
1. have a vacuum bag for segregation, comprise the internal layer of coextru-lamination successively, middle level and skin, it is characterized in that, described internal layer and skin are mixed by nylon and fluorinated material, and described middle level is made up of nylon; Nylon in described internal layer and the percentage by weight of fluorinated material are respectively 70% ~ 85% and 15% ~ 30%; Nylon in described skin and the percentage by weight of fluorinated material are respectively 70% ~ 85% and 15% ~ 30%; Nylon in described internal layer, middle level and skin is DSMAkulonF136-C1.
2., for the preparation of a method with the vacuum bag of segregation according to claim 1, it is characterized in that, comprise the following steps:
(1) go out internal layer raw material, middle level raw material and outer raw material according to the proportioning component proportion of above-mentioned percentage by weight, internal layer raw material and outer raw material all add a small amount of compatilizer in batch mixing process;
(2) internal layer raw material, middle level raw material and outer raw material are respectively charged in the internal layer hopper of helical plastic extruder, middle level hopper and outer hopper, then through helical plastic extruder plastifying fusion;
(3) under the barrel internal pressure of spiral plastic extruder and screw rod thrust forward thereof act on simultaneously, the internal layer raw material of melt shape, middle level raw material and outer raw material are transported in the die head of three-layer co-extruded inflation film manufacturing machine, via the die head coextru-lamination of three-layer co-extruded inflation film manufacturing machine, the tubular blank after extruding is blown into tubular vacuum bag through the mouth mould place of three-layer co-extruded inflation film manufacturing machine again;
The extruder temperature of described screw rod plastic extruder is 220 ~ 240 DEG C, and rotating speed is 15 ~ 80rpm, and extruding tonnage is 15 ~ 30MPa;
The temperature of described three-layer co-extruded inflation film manufacturing machine is 235 ~ 240 DEG C, and blow-up ratio is 1.4 ~ 2, and film thickness is 30 ~ 100um, and coiling speed is 30 ~ 60m/min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310728809.1A CN103692708B (en) | 2013-12-25 | 2013-12-25 | A kind of vacuum bag with segregation and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310728809.1A CN103692708B (en) | 2013-12-25 | 2013-12-25 | A kind of vacuum bag with segregation and preparation method thereof |
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| CN103692708A CN103692708A (en) | 2014-04-02 |
| CN103692708B true CN103692708B (en) | 2016-03-16 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005058594A1 (en) * | 2003-12-10 | 2005-06-30 | Certech Asbl | Polymeric films and laminates |
| CN202781851U (en) * | 2012-09-04 | 2013-03-13 | 上海沥高科技有限公司 | Vacuum bag for composite molding |
| CN203110350U (en) * | 2013-02-26 | 2013-08-07 | 嘉兴佑威复合材料有限公司 | Double-layered vacuum bag film |
| CN103332378A (en) * | 2013-06-25 | 2013-10-02 | 苏州市星辰新材料有限公司 | Vacuum nylon bag |
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2013
- 2013-12-25 CN CN201310728809.1A patent/CN103692708B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005058594A1 (en) * | 2003-12-10 | 2005-06-30 | Certech Asbl | Polymeric films and laminates |
| CN202781851U (en) * | 2012-09-04 | 2013-03-13 | 上海沥高科技有限公司 | Vacuum bag for composite molding |
| CN203110350U (en) * | 2013-02-26 | 2013-08-07 | 嘉兴佑威复合材料有限公司 | Double-layered vacuum bag film |
| CN103332378A (en) * | 2013-06-25 | 2013-10-02 | 苏州市星辰新材料有限公司 | Vacuum nylon bag |
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| CN103692708A (en) | 2014-04-02 |
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Address after: Pudong New Area Cambridge Road 201319 Shanghai City No. 18 Lane 1365 Patentee after: Shanghai Lek tech Limited by Share Ltd Address before: Pudong New Area Cambridge Road 201319 Shanghai City No. 18 Lane 1365 Patentee before: Shanghai Leadgo-Tech Co., Ltd. |