US3854220A - Method and apparatus for continuously drying wet non-hygroscopic surfaces of sheet material - Google Patents

Method and apparatus for continuously drying wet non-hygroscopic surfaces of sheet material Download PDF

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Publication number
US3854220A
US3854220A US00372755A US37275573A US3854220A US 3854220 A US3854220 A US 3854220A US 00372755 A US00372755 A US 00372755A US 37275573 A US37275573 A US 37275573A US 3854220 A US3854220 A US 3854220A
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United States
Prior art keywords
sheet material
squeeze rolls
rolls
squeeze
hot air
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Expired - Lifetime
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US00372755A
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English (en)
Inventor
M Yamaguchi
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Pilot Corp
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Pilot Pen Co Ltd
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Publication date
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/16—Drying solid materials or objects by processes not involving the application of heat by contact with sorbent bodies, e.g. absorbent mould; by admixture with sorbent materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B7/00—Drying solid materials or objects by processes using a combination of processes not covered by a single one of groups F26B3/00 and F26B5/00

Definitions

  • ABSTRACT mm f. n sem G ma m n m u u 0 mwnh a o Hm aSgm mC.m t.
  • This invention relates to a method and an apparatus for continuously drying wet surfaces of sheet materials made of or coated with non-hygroscopic materials such as for example metal, synthetic resin, or glass.
  • the most common method of drying wet nonhygroscopic surfaces of sheet materials, which are continuously conveyed, is to directly heat such sheet materials to vaporize liquid deposited on their surfaces. According to such method, however, in order to shorten the drying time, the heating temperature must be raised. Such rise of the heating temperature causes thermal deformation or deterioration of some types of sheet materials to be dried.
  • an object of the present invention is to provide a novel method and an apparatus for easily drying liquid deposited on non-hygroscopic surfaces on sheet materials without thermal deformation or deterioration thereof while they are continuously conveyed.
  • a method for continuously drying wet non-hygroscopic surfaces of a sheet material comprising: continuously conveying a sheet material through plural pairs of squeeze rolls juxtaposed in the conveying direction; removing squeezed liquid aggregated and deposited on the surfaces of said sheet material as stemmed or held up by the surfaces of said squeeze rolls; transferring the liquid remaining on said surfaces of said sheet material'onto respective rotating squeeze roll surfaces in the form of a thin liquid film while said sheet material passes through the respective pair of said squeeze rolls; and vaporizing said transferred liquid on the surfaces of said respective rotating squeeze rolls by applying hot air upon said squeeze roll surfaces.
  • the squeeze rolls are coated with elastic, liquid non-repellent material such as, for example, synthetic rubber, polyethylene, soft vinyl chloride, soft nylon (6-nylon), or polypropylene.
  • elastic, liquid non-repellent material such as, for example, synthetic rubber, polyethylene, soft vinyl chloride, soft nylon (6-nylon), or polypropylene.
  • the most pref erable coating material is urethane rubber having Shore hardness A 40 90.
  • the first pair of rolls through which the sheet material is initially subjected to drying treatment of the present invention, mainly act to squeeze the liquid deposited thereon, so that it is preferable to coat the roll with liquid repellent material such as fluorine-contained resin.
  • the squeezed water aggregated on the surface of the sheet material as stemmed or held up by the surfaces of the squeeze rolls drops from both sides of the squeeze rolls or comes down along the surface of the lower squeeze roll and is, thereby, discharged. If it is desired to positively discharge the squeezed water, there may be provided a means for blowing off the squeezed liquid by compressed air or means for sucking it by vacuum.
  • the water transferred on the rolls can be dried up within a short period of time by applying hot air of relatively low temperature upon the rolls.
  • the sheet material is indirectly dried with the heated squeeze rolls which also function to convey the sheet materials, undesirable thermal influences can be minimized and the drying time period is remarkably shortened.
  • the hot air applied to the roll surfaces is filled in the housing and then discharged. Accordingly, the hot air filled in the housing will also serve to dry the surfaces of the sheet material and the rolls.
  • upper and lower subsidiary rolls may be disposed between the adjacent pairs of the squeeze rolls in contact therewith to form respective closed spaces therebetween.
  • the hot air is applied to the squeeze rolls at the outside of the closed spaces.
  • the closed space is effectively isolated from the hot air and the sheet material conveyed through the closed spaces is not effected at all by the hot air, so that this structure is most preferable for drying treatment of sheet materials which are easily deformed or deteriorated by heat.
  • the present method is most effective when applied to drying treatment of copper plate which has been ground and washed and on which electrical circuit pattern is to be printed.
  • FIG. 1 is a sectional side view showing a drying apparatus according to an embodiment of the present invention which is communicated with a grinding and washing apparatus,
  • FIG. 2 is a plane view of the apparatus shown in FIG. 1 in which a top cover is removed, and
  • FIG. 3 is a schematic side view showing a drying apparatus according to another embodiment of the pres-
  • a pair of feed rollers 2 are disposed adjacent to an inlet 3 of the grinding and washing housing 1.
  • the housing 1 comprises therein plural pairs of feed rollers 4, upper and lower spray pipes 5 for washing water disposed between adjacent pairs of feed rollers 4, a drain pipe 6 connected to the bottom of the housing, a grinding roll 7, and a roll 8.
  • a sheet material such as copper plate is fed in the housing 1 through the inlet 3 thereof by the feed rollers 2 and conveyed by the plural pairs of feed rollers 4. While conveyed by the feed rollers 4, the sheet material is subjected to washing, grinding and washing treatments by the spray pipes 5, grinding roll 7 and spray pipes 5 disposed in that order. Further detailed description relating to the grinding and washing apparatus shall be omitted herein, because this apparatus does not constitute a part of the present invention.
  • the drying housing 10 has an inlet 11 and an outlet 12 for the sheet material to be treated.
  • the inlet 11 of the drying housing 10 also serves as outlet of the washing and grinding housing 1.
  • In the drying housing 10 are provided eight pairs of squeeze rolls 23a 23h in which upper and lower rolls of each pair are circumscribed with each other.
  • the squeeze rolls 23a 23h are juxtaposed in such a manner that the sheet material can be conveyed along a horizontal plane on which the inlet 11 and the outlet 12 locate.
  • the lower squeeze rolls are positively and simultaneously rotated by chainsprocket means 17 driven by an electric motor 16.
  • the upper squeeze rolls are each compressed upon the associated lower squeeze roll by spring force (not shown) or by its weight.
  • Each of the hot air supply pipes 18 is provided with spouts 19 from which hot air is sprayed over the entire length of the squeeze rolls 23.
  • the hot air spouts 19 are fonned in the pipe 18 in such a manner that the spouts 19 are in opposition to the squeeze rolls 23 at both sides of the hot air supply pipe 18.
  • the hot air thus sprayed is once stored in the drying housing 10 closed by a cover 13 and then discharged out from an exhaust port 14 and through an exhaust duct 15.
  • the bottom face of the drying housing 10 is inclined so that the squeezed water will be collected into a suitable drain pipe (not shown).
  • a sheet material 24 to be dried is fed into the drying housing 10 through the inlet opening 1 1 and is first held between the first pair of squeeze rolls 23a, whereby the liquid deposited on the nonhygroscopic surface of the sheet material is substantially squeezed out and falls down.
  • the remaining liquid on the sheet material 24 is partially transferred onto the squeeze roll surfaces in the form of a thin film, and then the sheet material 24 is further conveyed to the right hand in FIGS. 1 and 2 so that it is now held between the second pairs of squeeze rolls 23b, where the same squeezing and transferring of the liquid as set forth above are performed.
  • the similar operations are repeated as the sheet material 24 is conveyed through the pairs of squeeze rolls 23c to 23h.
  • the liquid transferred onto the respective squeeze rolls in the form of a thin film is vaporized by hot air continuously sprayed from the hot air spouts.
  • the sheet material thus dried in this manner is delivered out from the outlet opening 12 to next printing operations.
  • upper and lower subsidiary rolls 25a 252 are disposed between the adjacent pairs of the squeeze rolls 23 in contact therewith to form respective closed spaces 26a 26e therebetween.
  • Each of the upper and lower subsidiary rolls 25 are separated from each other so as not to contact with the sheet material 24 conveyed through the respective closed spaces 26a 26e.
  • there is no hot air supply pipe such as provided in the first embodiment.
  • the closed drying housing 10 is provided at one end (right end in FIG. 3) of the bottom plate with a hot air intake port 27 communicating with a heater 21 of the type shown in FIG. 1 and at one end (left end in FIG. 3) of the upper plate, which end is remote from the intake port 27, with a hot air discharge port 28.
  • Other remaining features are substantially same as those of the first embodiment.
  • the liquid deposited on the sheet material is transferred to the squeeze roll surfaces in the form of thin films as disclosed in the first embodiment.
  • the liquid transferred onto the respective squeeze rolls is vaporized by hot air filled in the drying housing 10 outside of the closed spaces 26a 26e.
  • such structure is most preferable when adapted to drying treatment of sheet materials easily deformed or deteriorated by heat.
  • hot air supply pipes of the type shown in the first embodiment may be provided at the outside of the closed spaces 26a 26e in the housing of the second embodiment.
  • An apparatus for continuously drying wet nonhygroscopic surfaces of a sheet material comprising:
  • hot air supply pipes each being disposed between the adjacent pairs of squeeze rolls with hot air spouts opening in opposition to the respective squeeze rolls along the substantially entire length of the squeeze rolls.
  • a method of continuously drying wet nonhygroscopic surfaces of a sheet material comprising:
  • An apparatus for continuously drying wet nonhygroscopic surfaces of a sheet material comprising:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Drying Of Solid Materials (AREA)
US00372755A 1972-07-10 1973-06-22 Method and apparatus for continuously drying wet non-hygroscopic surfaces of sheet material Expired - Lifetime US3854220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6880472A JPS5547306B2 (enrdf_load_stackoverflow) 1972-07-10 1972-07-10

Publications (1)

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US3854220A true US3854220A (en) 1974-12-17

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US00372755A Expired - Lifetime US3854220A (en) 1972-07-10 1973-06-22 Method and apparatus for continuously drying wet non-hygroscopic surfaces of sheet material

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JP (1) JPS5547306B2 (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973329A (en) * 1973-11-07 1976-08-10 Hoechst Aktiengesellschaft Process and device for drying synthetic fibrous material
US5079853A (en) * 1989-10-19 1992-01-14 Fuji Photo Film Co., Ltd. Photosensitive material drying apparatus
US20100224574A1 (en) * 2009-03-09 2010-09-09 Youngs Ross O Method and apparatus for separating particles from a liquid
US20120317830A1 (en) * 2011-06-17 2012-12-20 EAGLE TECH S.r.l. Hood Assembly for Controllably Cooling Extruded Section Members of Aluminium and Other Metal Materials at an Output of an Extruding Line Therefor.
EP3462115A1 (en) * 2018-11-26 2019-04-03 UPM Plywood Oy A device and a method for drying a veneer, and a method for adapting a dryer to form a device for drying a veneer
CN110631331A (zh) * 2019-06-11 2019-12-31 温州乐发教育科技有限公司 一种磁性胶条粘连水去除装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5240866A (en) * 1975-09-26 1977-03-30 Sharp Corp Drying device for sheet-like body

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US611422A (en) * 1898-09-27 Paper-making machine
US1214234A (en) * 1916-04-12 1917-01-30 L B Skinner Mfg Co Fruit-drier.
US1571214A (en) * 1922-06-29 1926-02-02 Frank T Powers Apparatus for drying plates of various sorts
US1632750A (en) * 1924-08-01 1927-06-14 Coe Mfg Co Drier for sheet material
US2209759A (en) * 1937-06-28 1940-07-30 Beloit Iron Works Absorbent press roll assembly
US2474091A (en) * 1944-02-25 1949-06-21 Eagie Picher Company Machine for processing storage battery plates
US3009257A (en) * 1960-11-09 1961-11-21 Kenneth W Scott Integrated squeegee-air dryer
US3296710A (en) * 1965-07-15 1967-01-10 Rice Barton Corp Absorbent dryer
US3689147A (en) * 1967-12-20 1972-09-05 Shigeru Suzuki Liquid-development type electrophotographic apparatus including paper drier means

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5520154Y2 (enrdf_load_stackoverflow) * 1974-09-28 1980-05-14

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US611422A (en) * 1898-09-27 Paper-making machine
US1214234A (en) * 1916-04-12 1917-01-30 L B Skinner Mfg Co Fruit-drier.
US1571214A (en) * 1922-06-29 1926-02-02 Frank T Powers Apparatus for drying plates of various sorts
US1632750A (en) * 1924-08-01 1927-06-14 Coe Mfg Co Drier for sheet material
US2209759A (en) * 1937-06-28 1940-07-30 Beloit Iron Works Absorbent press roll assembly
US2474091A (en) * 1944-02-25 1949-06-21 Eagie Picher Company Machine for processing storage battery plates
US3009257A (en) * 1960-11-09 1961-11-21 Kenneth W Scott Integrated squeegee-air dryer
US3296710A (en) * 1965-07-15 1967-01-10 Rice Barton Corp Absorbent dryer
US3689147A (en) * 1967-12-20 1972-09-05 Shigeru Suzuki Liquid-development type electrophotographic apparatus including paper drier means

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973329A (en) * 1973-11-07 1976-08-10 Hoechst Aktiengesellschaft Process and device for drying synthetic fibrous material
US5079853A (en) * 1989-10-19 1992-01-14 Fuji Photo Film Co., Ltd. Photosensitive material drying apparatus
US20100224574A1 (en) * 2009-03-09 2010-09-09 Youngs Ross O Method and apparatus for separating particles from a liquid
US8092691B2 (en) 2009-03-09 2012-01-10 Univenture, Inc. Method and apparatus for separating particles from a liquid
US8286801B2 (en) 2009-03-09 2012-10-16 Univenture, Inc. Method and apparatus for separating particles from a liquid
US20120317830A1 (en) * 2011-06-17 2012-12-20 EAGLE TECH S.r.l. Hood Assembly for Controllably Cooling Extruded Section Members of Aluminium and Other Metal Materials at an Output of an Extruding Line Therefor.
EP3462115A1 (en) * 2018-11-26 2019-04-03 UPM Plywood Oy A device and a method for drying a veneer, and a method for adapting a dryer to form a device for drying a veneer
CN110631331A (zh) * 2019-06-11 2019-12-31 温州乐发教育科技有限公司 一种磁性胶条粘连水去除装置

Also Published As

Publication number Publication date
JPS5547306B2 (enrdf_load_stackoverflow) 1980-11-28
JPS4927960A (enrdf_load_stackoverflow) 1974-03-12

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