CN102744884A - Stretching and setting apparatus and stretching and setting method for ventilating waterproofing membrane - Google Patents
Stretching and setting apparatus and stretching and setting method for ventilating waterproofing membrane Download PDFInfo
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- CN102744884A CN102744884A CN2012102041789A CN201210204178A CN102744884A CN 102744884 A CN102744884 A CN 102744884A CN 2012102041789 A CN2012102041789 A CN 2012102041789A CN 201210204178 A CN201210204178 A CN 201210204178A CN 102744884 A CN102744884 A CN 102744884A
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- setting
- stretching
- ventilated membrane
- waterproof ventilated
- atent solvent
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- 239000012528 membrane Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004078 waterproofing Methods 0.000 title abstract 3
- 239000002904 solvent Substances 0.000 claims abstract description 37
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 16
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 16
- 238000005266 casting Methods 0.000 claims description 37
- 238000001816 cooling Methods 0.000 claims description 30
- 238000007493 shaping process Methods 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 229960002668 sodium chloride Drugs 0.000 claims description 3
- 235000002639 sodium chloride Nutrition 0.000 claims description 3
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 239000010408 film Substances 0.000 description 29
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000007766 curtain coating Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention discloses a stretching and setting apparatus and a stretching and setting method for ventilating waterproofing membrane. The stretching and setting apparatus is composed of a stretching system and a cool setting system. The stretching system comprises a plurality groups of side-by-side stretching rolls which rotate in the same direction. The cool setting system comprises a plurality groups of side-by-side setting rolls which rotate in the same direction. The stretching rolls and the setting rolls are respectively arranged in a stretching box and a setting box. The stretching box is loaded with an inertia solvent with an operating temperature which is 0.5-0.7 times the melting point of a thermoplastic used for the ventilating membrane. The setting box is loaded with an inertia solvent with an operating temperature of 20-40 DEG C. The plurality groups of stretching rolls and the plurality groups of setting rolls are completely immersed in corresponding inertia solvent. The stretching and setting method comprises steps of membrane in turn enters the stretching system and cool setting system to get stretched and cool set respectively. By using the stretching and setting apparatus and the stretching and setting method of the invention, ventilating waterproofing membrane with evenly distributed micropores can be produced.
Description
Technical field
The present invention relates to technical field of plastic, particularly a kind of drawing and setting device of waterproof ventilated membrane and drawing and setting method.
Background technology
Waterproof ventilated membrane mainly is to be carrier with the thermoplastic, adds inorganic mineral filler after the extrusion molding of the cold roller method of forming of curtain coating is handled through longitudinal stretching then, makes it to have unique microcellular structure.These are distributed in the special construction micropore of film surface with high density, make the seepage that film can liquid barrier water, can let gas molecules such as water vapour pass through again.At present the main application fields of waterproof ventilated membrane comprises that personal hygiene nursing materials, medical protection articles for use (like medical bed mattress, protective garment, operation dress, Operating sheet, hot compress paste, Medical pillowcase etc.), special place personal protective equipment, clothes back boxing, medicine packing use auxiliary material, building trade etc.Hong Kong and Taiwan area in America and Europe, Japan, Korea S, the Far East Area and China, the waterproof ventilated membrane that has been widely used is in above-mentioned field.Existing waterproof and breathable membrane production equipment mainly is by casting machine; Pre-heating system; Tensioning system, formations such as cooling and shaping system, wherein; The effect of tensioning system and cooling and shaping system is to make on the film through stretching and forms microcellular structure and make its typing through the cooling and shaping system; But in existing tensioning system and the cooling and shaping system film be heated inhomogeneously, cause the air penetrability deviation between the different parts of stretch inhomogeneous and final finished film bigger, be difficult to be applied to the field that requires the air penetrability deviation less.
Summary of the invention
The objective of the invention is to overcome the shortcoming and the deficiency of prior art, provide a kind of and can evenly stretch and cooling and shaping becomes to have the drawing and setting device of the waterproof ventilated membrane of uniform air penetrability.
Another object of the present invention is to provide a kind of above-mentioned drawing and setting method of stretching the waterproof ventilated membrane of device realization of utilizing.
The object of the invention is realized through following technical scheme:
A kind of drawing and setting device of waterproof ventilated membrane; Form by tensioning system and cooling and shaping system; Wherein, tensioning system comprises many groups rotation casting roller side by side in the same way, and the cooling and shaping system comprises many groups rotation setting roll side by side in the same way; Described casting roller and setting roll are separately positioned in stretching casing and the typing casing; Wherein, it is 0.5～0.7 times atent solvent of the used thermoplastic fusing point of ventilated membrane that operating temperature is housed in the stretching casing, and it is 20～40 ℃ atent solvent that operating temperature is equipped with in typing in the casing; Organize casting roller more described and organize setting roll more and all be immersed in fully in the corresponding atent solvent.
The drawing and setting device of waterproof ventilated membrane of the present invention, wherein, described atent solvent is that water or mass concentration are 70% sodium-chloride water solution etc.
The drawing and setting device of waterproof ventilated membrane of the present invention, wherein, the gap in the said tensioning system between the two adjacent groups casting roller is 1～5mm, is preferably 2m.The gap is that 1～5mm had both guaranteed that the little gap of film stretched, and can prevent that again the stuck stretching casting roller of film from causing unit exception to shut down.
The drawing and setting device of waterproof ventilated membrane of the present invention, wherein, the rotating speed of the one group of casting roller in back is 1.01～1.1 times of last group of casting roller rotating speed in the said tensioning system, preferably 1.05.Draw ratio had both guaranteed between 1.01～1.1 that each piece film all by uniform stretching, had improved production efficiency again.
The drawing and setting device of waterproof ventilated membrane of the present invention, wherein, the gap in the said cooling and shaping system between the two adjacent groups setting roll is preferably 7mm at 5～10mm.Gap between the setting roll can guarantee that at 5～10mm film is by sufficient cooling and shaping.
The drawing and setting device of waterproof ventilated membrane of the present invention wherein, comprises 10～20 groups of casting rollers in the described tensioning system, comprise 5～10 groups of setting rolls in the described cooling and shaping system.Draw roll and setting roll bar number can suitably increase and decrease according to the requirement of doing film air penetrability.
The drawing and setting device of waterproof ventilated membrane of the present invention, wherein, the operating temperature of the atent solvent in the said stretching casing is 0.6 times of the used thermoplastic fusing point of ventilated membrane.
The drawing and setting device of waterproof ventilated membrane of the present invention, wherein, the operating temperature of the atent solvent in the said typing casing is 30 ℃.
A kind of drawing and setting method of utilizing the waterproof ventilated membrane of above-mentioned drawing and setting device realization is characterized in that may further comprise the steps:
(1) film of being extruded by casting machine gets into tensioning system; And rotate side by side in the same way through many groups successively and casting roller that be immersed in fully in the atent solvent stretches, wherein the operating temperature of atent solvent is 0.5～0.7 times of the used thermoplastic fusing point of ventilated membrane;
(2) film after stretched gets into the cooling and shaping system, and rotates side by side in the same way through many groups successively and setting roll that be immersed in fully in the atent solvent carries out cooling and shaping, and wherein the operating temperature of atent solvent is 20～40 ℃.
(3) form waterproof ventilated membrane through the film behind the cooling and shaping, by the wrap-up rolling.
The present invention compared with prior art has following beneficial effect:
Casting roller of the present invention and setting roll are immersed in respectively in the atent solvent in stretching casing and the typing casing; And the temperature of the atent solvent in the stretching casing is 0.5～0.7 times; This temperature generally is between thermoplastic glass transition temperature and the fusing point; Be in elastomeric state at the used plastics of this temperature thin-film, plastics stretch easily under this state, and this temperature temperature (0.8 times of thermoplastic fusing point) of having avoided the maximum crystalline rates of plastics can prevent effectively again that film from producing stretch crystallization in drawing process simultaneously; Make the film hardening, influence follow-up even stretching; The temperature of the inert fluid in the typing casing is 20～40 ℃; This temperature is generally below the thermoplastic glass transition temperature; Drawing high back cooling and shaping rapidly at this temperature thin-film; Plastics in the film carry out the transition to glassy state from elastomeric state rapidly, thereby the micropore that film stretching is produced maintains the original state; This shows; Drawing process and type-approval process carry out in constant proper temperature environment, make after the stretching, can form equally distributed microcellular structure on the film; The cooling and shaping system can guarantee that then film does not deform after stretching; Keep having equally distributed microcellular structure, make that the air penetrability deviation between the ventilated membrane finished product different parts is little, can be applied to the field that requires the air penetrability deviation less.
Description of drawings
Fig. 1 is the structural representation of a specific embodiment of the drawing and setting device of waterproof ventilated membrane of the present invention.
Fig. 2 is the structural representation of tensioning system among Fig. 1.
Fig. 3 is the structural representation of cooling and shaping system among Fig. 1.
Fig. 4 is the structural representation of the employed process equipment of drawing and setting method of waterproof ventilated membrane of the present invention.
The specific embodiment
Referring to Fig. 1 and Fig. 2; The drawing and setting device of waterproof ventilated membrane of the present invention is made up of with cooling and shaping system 3 tensioning system 2; Wherein, tensioning system 2 is arranged in parallel by 14 groups of homodromal casting rollers 7 and forms, and every group of casting roller 7 is made up of two casting rollers 7 up and down; Gap between two casting roller 7 above-below directions is the thickness of film 8, and the big I in this gap is adjusted by HYDRAULIC CONTROL SYSTEM; Described 14 groups of casting rollers 7 are arranged in the stretching casing 6, and the top of this stretching casing 6 is provided with the inlet 6-1 of atent solvent, and the bottom is provided with the outlet 6-2 of atent solvent; In the stretching casing 6 atent solvent is housed; This atent solvent is a water, its operating temperature (temperature when stretching) for 0.6 times of the fusing point of the used thermoplastic of breathable films 8 (for example, when used thermoplastic be the HDPE material time; If the fusing point of HDPE is 130 ℃; This specified temp is 78 ℃), under this temperature, this atent solvent does not react with used thermoplastic; Described 14 groups of casting rollers 7 are immersed in the described atent solvent fully.Described each group casting roller 7 is driven by an independent direct current generator, and the rotating speed of the one group of casting roller 7 in back is 1.05 times of last group of casting roller 7 rotating speeds; Gap between the two adjacent groups casting roller 7 is 2mm.
Referring to Fig. 3; Described typing cooling system is arranged in parallel by 8 groups of homodromal setting rolls 4 and forms; Every group of setting roll 4 is made up of two setting rolls 4 up and down, and the gap between two setting roll 4 above-below directions can be through the HYDRAULIC CONTROL SYSTEM adjusting according to the thickness of film 8; Described 8 groups of setting rolls 4 are arranged in the typing casing 5; These typing casing 5 tops are provided with inert fluid inlet 5-1; The bottom is provided with inert fluid outlet 5-2; In this typing casing 5 atent solvent is housed, this atent solvent is that mass concentration is 70% sodium-chloride water solution, and its operating temperature (temperature when carrying out cooling and shaping) is 30 ℃.Described each group setting roll 4 is driven by an independent direct current generator, and every group of setting roll 4 rotating speeds are identical, and speed error is controlled at ± 3～5RPM; Gap between every group of setting roll 4 is 7mm.
Between the porch of above-mentioned tensioning system 2, tensioning system 2 and the cooling and shaping the system 3 and exit of cooling and shaping system 3 all is equipped with carry-over pinch rolls 9, is used for guiding and handle thin films 8.
In above-mentioned drawing and setting device; Except top embodiment; Can also adopt other embodiment; For example; Can be according to concrete technological requirement, the quantity of the casting roller 7 in the tensioning system 2 select between 10～20 groups, gap between the two adjacent groups casting roller 7 is being selected between 1～5mm, the ratio of speed between the one group of casting roller 7 in back and the last group of casting roller 7 is being selected between 1.01～1.1, select between the temperature of atent solvent 0.5～0.7 times at the used thermoplastic fusing point of ventilated membrane; The quantity of the setting roll 4 in the film 8 typing cooling systems is selected between 20～40 ℃ in the temperature of selection, atent solvent between 5～10mm in the gap between selection, the two adjacent groups setting roll 4 between 5～10 groups.
Referring to Fig. 4, the drawing and setting method of waterproof ventilated membrane of the present invention is a method of utilizing above-mentioned drawing and setting device to realize, may further comprise the steps:
(1) film of from casting machine 1, extruding 8 gets in the stretching casing 6 of tensioning system 2 through carry-over pinch rolls 9; Film 8 stretches under 7 effects of 14 groups of casting rollers of speed increase uniformly, and this drawing process carries out in temperature is 0.6 times the atent solvent of fusing point of the used thermoplastic of breathable films 8; Stretch and finish the upward equally distributed microcellular structure of formation of rear film 8 surfaces;
(2) stretched film 8 gets in the typing casing 5 of typing cooling system under carry-over pinch rolls 9 effects; The effect that the film 8 that the surface has a microcellular structure remains on 8 groups of setting rolls 4 that equate through speed in 30 ℃ the atent solvent in temperature is cooled off and is finalized the design, and finally forms the waterproof ventilated membrane finished product;
(3) the waterproof ventilated membrane finished product is got up to deposit by wrap-up 10 rollings.
Above-mentioned is preferred implementation of the present invention; But embodiment of the present invention does not receive the restriction of foregoing; Other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. the drawing and setting device of a waterproof ventilated membrane; Be made up of tensioning system and cooling and shaping system, wherein, tensioning system comprises many groups rotation casting roller side by side in the same way; The cooling and shaping system comprises many groups rotation setting roll side by side in the same way; It is characterized in that described casting roller and setting roll are separately positioned in stretching casing and the typing casing, wherein; It is 0.5～0.7 times atent solvent of the used thermoplastic fusing point of ventilated membrane that operating temperature is housed in the stretching casing, and it is 20～40 ℃ atent solvent that operating temperature is equipped with in typing in the casing; Organize casting roller more described and organize setting roll more and all be immersed in fully in the corresponding atent solvent.
2. the drawing and setting device of waterproof ventilated membrane according to claim 1 is characterized in that, described atent solvent is that water or mass concentration are 70% sodium-chloride water solution.
3. the drawing and setting device of waterproof ventilated membrane according to claim 1 is characterized in that, the gap in the said tensioning system between the two adjacent groups casting roller is 1～5mm.
4. the drawing and setting device of waterproof ventilated membrane according to claim 1 is characterized in that, the rotating speed of the one group of casting roller in back is 1.01～1.1 times of last group of casting roller rotating speed in the said tensioning system.
5. the drawing and setting device of waterproof ventilated membrane according to claim 1 is characterized in that, the gap in the said cooling and shaping system between the two adjacent groups setting roll is at 5～10mm.
6. the drawing and setting device of waterproof ventilated membrane according to claim 1 is characterized in that, comprises 10～20 groups of casting rollers in the described tensioning system.
7. the drawing and setting device of waterproof ventilated membrane according to claim 1 is characterized in that, comprises 5～10 groups of setting rolls in the described cooling and shaping system.
8. the drawing and setting device of waterproof ventilated membrane according to claim 1 is characterized in that, the operating temperature of the atent solvent in the said stretching casing is 0.6 times of the used thermoplastic fusing point of ventilated membrane.
9. the drawing and setting device of waterproof ventilated membrane according to claim 1 is characterized in that, the operating temperature of the atent solvent in the said typing casing is 30 ℃.
10. the drawing and setting method of the waterproof ventilated membrane realized of a drawing and setting device that utilizes in the claim 1～7 each is characterized in that may further comprise the steps:
(1) film of being extruded by casting machine gets into tensioning system; And rotate side by side in the same way through many groups successively and casting roller that be immersed in fully in the atent solvent stretches, wherein the operating temperature of atent solvent is 0.5～0.7 times of the used thermoplastic fusing point of ventilated membrane;
(2) film after stretched gets into the cooling and shaping system, and rotates side by side in the same way through many groups successively and setting roll that be immersed in fully in the atent solvent carries out cooling and shaping, and wherein the operating temperature of atent solvent is 20～40 ℃.
(3) form waterproof ventilated membrane through the film behind the cooling and shaping, by the wrap-up rolling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102041789A CN102744884A (en) | 2012-06-19 | 2012-06-19 | Stretching and setting apparatus and stretching and setting method for ventilating waterproofing membrane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102041789A CN102744884A (en) | 2012-06-19 | 2012-06-19 | Stretching and setting apparatus and stretching and setting method for ventilating waterproofing membrane |
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| CN102744884A true CN102744884A (en) | 2012-10-24 |
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| CN2012102041789A Pending CN102744884A (en) | 2012-06-19 | 2012-06-19 | Stretching and setting apparatus and stretching and setting method for ventilating waterproofing membrane |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103446895A (en) * | 2013-08-19 | 2013-12-18 | 武汉利英唯尔科学技术有限公司 | Curtain coating micro dip coating continuous production equipment and method of ultrathin membrane polymer complex film |
| CN110936593A (en) * | 2019-12-23 | 2020-03-31 | 福建宏科新材料科技有限公司 | Waterproof ventilated membrane stretching device |
| CN111204036A (en) * | 2020-03-16 | 2020-05-29 | 福建宏科新材料科技有限公司 | A breathable film stretching device |
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| US4954306A (en) * | 1987-10-26 | 1990-09-04 | Saint-Gobain Vitrage | Method and device for the manufacture of a sheet of polyvinylbutyral |
| CN1285265A (en) * | 2000-09-05 | 2001-02-28 | 甘国工 | Method and implement for producing bidirectional stretching-resistant tube-shape compound diaphragm and plain compound liaphragm |
| US20040241344A1 (en) * | 2001-08-29 | 2004-12-02 | Hiroyuki Kawanishi | Method for producing optical compensating film, optical compensating film circularly polarizing plate, and liquid crystal display |
| CN202742680U (en) * | 2012-06-19 | 2013-02-20 | 广州市合诚化学有限公司 | Stretching and sizing device of waterproof ventilating membrane |
-
2012
- 2012-06-19 CN CN2012102041789A patent/CN102744884A/en active Pending
Patent Citations (4)
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|---|---|---|---|---|
| US4954306A (en) * | 1987-10-26 | 1990-09-04 | Saint-Gobain Vitrage | Method and device for the manufacture of a sheet of polyvinylbutyral |
| CN1285265A (en) * | 2000-09-05 | 2001-02-28 | 甘国工 | Method and implement for producing bidirectional stretching-resistant tube-shape compound diaphragm and plain compound liaphragm |
| US20040241344A1 (en) * | 2001-08-29 | 2004-12-02 | Hiroyuki Kawanishi | Method for producing optical compensating film, optical compensating film circularly polarizing plate, and liquid crystal display |
| CN202742680U (en) * | 2012-06-19 | 2013-02-20 | 广州市合诚化学有限公司 | Stretching and sizing device of waterproof ventilating membrane |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103446895A (en) * | 2013-08-19 | 2013-12-18 | 武汉利英唯尔科学技术有限公司 | Curtain coating micro dip coating continuous production equipment and method of ultrathin membrane polymer complex film |
| CN110936593A (en) * | 2019-12-23 | 2020-03-31 | 福建宏科新材料科技有限公司 | Waterproof ventilated membrane stretching device |
| CN110936593B (en) * | 2019-12-23 | 2025-03-07 | 福建宏科新材料科技有限公司 | A waterproof breathable membrane stretching device |
| CN111204036A (en) * | 2020-03-16 | 2020-05-29 | 福建宏科新材料科技有限公司 | A breathable film stretching device |
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Application publication date: 20121024 |