DE907167C - Process for the production of filter or diaphragm plates made of thermoplastics - Google Patents
Process for the production of filter or diaphragm plates made of thermoplasticsInfo
- Publication number
- DE907167C DE907167C DESCH2993D DESC002993D DE907167C DE 907167 C DE907167 C DE 907167C DE SCH2993 D DESCH2993 D DE SCH2993D DE SC002993 D DESC002993 D DE SC002993D DE 907167 C DE907167 C DE 907167C
- Authority
- DE
- Germany
- Prior art keywords
- thermoplastics
- filter
- production
- plates made
- diaphragm plates
- 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
Links
- 229920001169 thermoplastic Polymers 0.000 title claims description 5
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 239000004416 thermosoftening plastic Substances 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 3
- 239000002904 solvent Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
- B01D39/163—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
Description
Verfahren zur Herstellung von Filter- oder Diaphragmaplatten aus thermoplastischen Kunststoffen Zusatz zum Patent 895146 Nach dem Patent 895 I46 kann die Vereinigung mehrerer Lagen von Geweben aus thermoplastischen Kunststoffen zu einer porösen Platte in der Weise vorgenommen werden, daß die Gewebelagen unter Zuhilfenahme eines Lösungsmittels für den thermoplastischen Kunststoff in flüssiger oder in Dampfform unter Druck zu einer Platte vereinigt werden.Process for the production of filter or diaphragm plates made of thermoplastic Plastics addendum to patent 895146 According to the patent 895 I46, the association several layers of fabrics made of thermoplastics to form a porous plate be made in such a way that the fabric layers with the aid of a solvent for the thermoplastic material in liquid or vapor form under pressure be combined into one plate.
Statt eines reinen Lösungsmittels kann man vorteilhaft auch eine Mischung eines Lösungsmittels mit einer Flüssigkeit, die den Kunststoff nicht löst, oder eine Mischung von verschieden stark lösenden Flüssigkeiten verwenden. Es hat sich herausgestellt, daß bei gewissen thermoplastischen Kunststoffen ein reines Lösungsmittel so stark lösend wirkt, daß das Gewebegefüge in der fertigen Platte weitgehend zerstört wird, so daß diese Platte nicht mehr die gewünschte Porosität aufweist. Diese Gefahr wird dadurch vermieden, daß dem Lösungsmittel eine den Kunststoff nicht lösende oder eine schwach wirkendeFlüssigkeit beigemischt ist. Die so gemischte Lösung reicht dann aus, die notwendige oberflächliche Bindung zwischen den Fasern der Gewebe beim Herstellen der Platte zu erzielen uadl läßt ge nügend Poren zwischen den Gewebefasern offen. Instead of a pure solvent, one can also advantageously use one Mixing a solvent with a liquid that does not dissolve the plastic, or use a mixture of differently dissolving liquids. It has it turned out that with certain thermoplastics a pure Solvent has such a strong dissolving effect that the tissue structure in the finished panel is largely destroyed, so that this plate no longer has the desired porosity having. This risk is avoided by the fact that the solvent has a plastic a non-dissolving or a weakly acting liquid is added. The so mixed one Solution is then sufficient to create the necessary superficial bond between the fibers the tissue to achieve uadl in the manufacture of the plate is sufficient Pores open between the fabric fibers.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DESCH2993D DE907167C (en) | 1943-04-22 | 1943-04-22 | Process for the production of filter or diaphragm plates made of thermoplastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DESCH2993D DE907167C (en) | 1943-04-22 | 1943-04-22 | Process for the production of filter or diaphragm plates made of thermoplastics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE907167C true DE907167C (en) | 1954-03-22 |
Family
ID=7423549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DESCH2993D Expired DE907167C (en) | 1943-04-22 | 1943-04-22 | Process for the production of filter or diaphragm plates made of thermoplastics |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE907167C (en) |
-
1943
- 1943-04-22 DE DESCH2993D patent/DE907167C/en not_active Expired
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