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1. 发明公开

EP4245916A1 METHOD OF TREATING A FIBER WEB AND A TREATMENT SYSTEM FOR TREATMENT OF A FIBER WEB 审中-实审
公开(公告)号：EP4245916A1
公开(公告)日：2023-09-20
申请号：EP23158454.1
申请日：2023-02-24
申请人： Valmet Technologies Oy
发明人： PIETIKÄINEN, Reijo , PITKÄNIEMI, Tapio , RÄISÄNEN, Antti , TIILIHARJU, Mikko , VAITTINEN, Henri , VATANEN, Heikki , KIRVESMÄKI, Markku , KIVI, Esa , SUKSI, Tomi
IPC分类号： D21H21/16 , D21H23/48 , D21H23/56 , D21H23/78
摘要： The invention relates to a method of treating a fiber web, in which method the fiber web (W) is treated in a treatment system (10), in particular coated by curtain coating or sized by curtain sizing, which treatment system (10) comprises at least one curtain application device (20) and two treatment rolls (30) between of which treatment rolls (30) a treatment nip (N) is formed, in which method at least one curtain (C) of a treatment substance is provided by the application device (20). In the method an application device (20), which comprises a distribution chamber (21), at least one feed opening (20F), at least one flow-through (20FT) and a lip opening (24), is used to provide the curtain (C) of the treatment substance and in the method profile of the applied treatment substance in cross direction of the fiber web (W) i.e. in longitudinal direction of the application device (20) is controlled by at least one means configured to adjust flow of the treatment substance in the distribution chamber (21). The invention also relates to a treatment system for treatment of a fiber web (W), in particular a coating system for curtain coating or a sizing system for curtain sizing, which treatment system (10) comprises at least one curtain application device (20) and two treatment rolls (30) between of which treatment rolls (30) a treatment nip (N) is formed. The application device (20) comprises a distribution chamber (21), at least one feed opening (20F), at least one flow-through (20FT) and a lip opening (24) and the treatment system (10) further comprises at least one means configured to adjust flow of the treatment substance in the distribution chamber (21) to control the profile of the treatment substance applied in cross direction of the fiber web (W) i.e. in longitudinal direction of the application device (20).

2. 发明公开

EP3964644A1 SIZER 审中-公开
公开(公告)号：EP3964644A1
公开(公告)日：2022-03-09
申请号：EP21193684.4
申请日：2021-08-30
申请人： Valmet Technologies Oy
发明人： RÄISÄNEN, Antti , PITKÄNIEMI, Tapio , VAITTINEN, Henri , VATANEN, Heikki , VANHALA, Tommi , NAATTI, Ilkka
IPC分类号： D21H21/16 , D21H23/56 , D21H23/58
摘要： The invention relates to a sizer (10), which comprises at least one hard-surfaced sizing roll (11; 12), application means (22) configured to apply a sizing agent layer (A) onto the surface of the hard-surfaced sizing roll (11), an application element (20) configured to smoothen the sizing agent layer (A) to a smooth sizing agent layer (AS). The application element (20) is a soft-surfaced application element (20) and hardness of the soft-surfaced application element (20) is substantially lower than hardness of the hard-surfaced sizing roll (11).

3. 发明公开

EP3617403A1 METHOD OF TREATING A FIBER WEB AND A TREATMENT SYSTEM FOR TREATMENT OF A FIBER WEB 有权
公开(公告)号：EP3617403A1
公开(公告)日：2020-03-04
申请号：EP19184856.3
申请日：2019-07-08
申请人： Valmet Technologies Oy
发明人： VILJANMAA, Mika , VAITTINEN, Henri , MÄKELÄ, Tuulia , ILOMÄKI, Jari , HAKOLA, Jani , PIETIKÄINEN, Reijo , HYPPÖNEN, Vesa , JUPPI, Kari , LUOMI, Seppo , PITKÄNIEMI, Tapio , RÄISÄNEN, Antti , VATANEN, Heikki
IPC分类号： D21H23/48 , D21H23/62 , D21H25/06 , D21H23/32 , D21H23/42 , B05C1/08 , B05C3/12 , B05D1/30
摘要： The invention relates to a method of treating a fiber web, in which method the fiber web is sized in a sizer (10), in which the sizing agent (T) is applied onto the fiber web by two hard sizing rolls (11,12) in a sizing nip (N). The fiber web (W) is sized with high solids content sizing agent (T) by indirect curtain sizing in a curtain sizer (10) and in the sizing nip (N) at substantially uniform pressure distribution and uniform speed in cross-direction of the fiber web (W). After the sizing the fiber web (W) is heat-treated in a heat-treatment zone (Z) of a heat-treatment device (20). The invention also relates to a treatment system for treatment of a fiber web, which system comprises a sizer (10) comprising sizing rolls (11,12) forming a sizing nip (N). The system further comprises a heat-treatment device (20) comprising a heat-treatment zone (Z). The sizer is a curtain sizer (10) with indirect application of sizing agent (T) in high solids content and one of which hard sizing rolls is a deflection compensated roll and a substantially straight sizing nip is formed.

4. 发明公开

EP3342928A1 CURTAIN APPLICATION DEVICE 审中-公开
公开(公告)号：EP3342928A1
公开(公告)日：2018-07-04
申请号：EP16207285.4
申请日：2016-12-29
申请人： Valmet Technologies Oy
发明人： VATANEN, Heikki
IPC分类号： D21H23/48 , B05C5/00 , B05D1/30
CPC分类号： D21H23/48 , B05C5/008 , B05D1/30
摘要： The invention relates to a curtain application device (10) for fiber machines, in particular for paper and board machines comprising an application beam (13), which comprises at least one treatment substance chamber (14) with a nozzle opening (14A), a frame structure (11), support arms (12) attached at one end to the frame structure (11) and at the other end to the application beam (13), edge guides (20). Each of the edge guides (20) is movable in vertical direction such that vertical location (H20) of the edge guide (20) is adjustable independently from vertical location (H) of the application beam (13).

5. 发明公开

EP3988713A1 METHOD OF TREATING A FIBER WEB AND A TREATMENT SYSTEM FOR TREATMENT OF A FIBER WEB 有权
公开(公告)号：EP3988713A1
公开(公告)日：2022-04-27
申请号：EP21196576.9
申请日：2021-09-14
申请人： Valmet Technologies Oy
发明人： AHVENNIEMI, Vesa , ILOMÄKI, Jari , RÄISÄNEN, Antti , VAITTINEN, Henri , VANHALA, Tommi , VATANEN, Heikki , VILJANMAA, Mika
IPC分类号： D21H23/48 , B05C1/08 , D21H23/56 , D21H19/84 , D21H21/16
摘要： The invention relates to a method of treating a fiber web, in which method the fiber web is sized in a sizer (10) by indirect curtain sizing in a curtain sizer (10), in which the sizing agent (TA, TB) is applied onto at least one side of the fiber web by two sizing rolls (11A,11B) with metallic or ceramic surface or with polymeric surface, which polymeric surface has surface hardness 60 ― 100 shoreD, advantageously 80 - 95 shoreD, in a sizing nip (N), in which the fiber web (W) is sized with high solids content sizing agent (TA, TB) having solids content of 10 ― 60 %, preferably 20 ― 40 %, and viscosity of 50 cP- 2000 cP, preferably 100 cP ― 1500 cP, and the sizing agent (TA; TB) is applied onto the at least one side of the fiber web (W) by the two sizing rolls (11A,11N), in the sizing nip (N). After the sizing the fiber web (W) is directly guided to contactless and supported drying in an air-borne drying system (20) and the run of the fiber web (W) from the sizing nip (N) to beginning of the drying in the air-borne drying system (20) is not more than 2 m, advantageously not more than 0,5 m, and / or takes not more time than 0,5 s. The invention also relates to a treatment system for treatment of a fiber web, which treatment system comprises a sizer (10), which is a curtain sizer (10) with at least one curtain application device (12A; 12B) for indirect application of sizing agent (TA; TB) and comprises two hard sizing rolls (11A, 11B) with metallic or ceramic surface or with polymeric surface, which polymeric surface has surface hardness 60 ― 100 shoreD, advantageously 80 ― 95 shoreD, and forming a sizing nip (N), which curtain sizer (10) with the indirect application of sizing agent (TA, TB) is configured to apply the sizing agent (TA, TB) in high solids content of 10 ― 60 %, preferably 20 ― 40 % and in viscosity of 100 cP or over, preferably 1050 cP― 2000 cP, more preferably 100 cP ― 1500 cP. The treatment system further comprises an immediately after the sizer (10) located air-borne drying system (20) such, that the run of the fiber web (W) from the sizing nip (N) to beginning of the drying in the air-borne drying system (20) is not more than 2 m, advantageously not more than 0,5 m, and / or takes not more time than 0,5 s.

6. 发明公开

EP3875684A1 METHOD OF TREATING A FIBER WEB AND A TREATMENT SYSTEM FOR TREATMENT OF A FIBER WEB 有权
公开(公告)号：EP3875684A1
公开(公告)日：2021-09-08
申请号：EP21170343.4
申请日：2019-07-08
申请人： Valmet Technologies Oy
发明人： VILJANMAA, Mika , VAITTINEN, Henri , MÄKELÄ, Tuulia , ILOMÄKI, Jari , HAKOLA, Jani , PIETIKÄINEN, Reijo , HYPPÖNEN, Vesa , JUPPI, Kari , LUOMI, Seppo , PITKÄNIEMI, Tapio , RÄISÄNEN, Antti , VATANEN, Heikki
IPC分类号： D21H23/48 , D21H23/62 , D21H25/06 , D21H23/32 , D21H23/42 , B05C1/08 , B05C3/12 , B05D1/30
摘要： The invention relates to a method of treating a fiber web, in which method the fiber web is sized in a sizer (10), in which the sizing agent (T) is applied onto the fiber web by two hard sizing rolls (11,12) in a sizing nip (N). The fiber web (W) is sized with high solids content sizing agent (T) by indirect curtain sizing in a curtain sizer (10) and in the sizing nip (N) at substantially uniform pressure distribution and uniform speed in cross-direction of the fiber web (W). The fiber web (W) running substantially upwards is sized in the curtain sizer (10). The invention also relates to a treatment system for treatment of a fiber web, which system comprises a sizer (10) comprising sizing rolls (11,12) forming a sizing nip (N). The sizer is a curtain sizer (10) with indirect application of sizing agent (T) in high solids content and one of which hard sizing rolls is a deflection compensated roll and a substantially straight sizing nip is formed. In the curtain sizer (10) run of the fiber web (W) is substantially upwards.

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