Apparatus for maximizing water removal in a press nip

An apparatus for forming an absorbent paper sheet product comprising:

• a moving foraminous endless fabric;
• means for depositing a nascent web for said absorbent paper sheet on said foraminous endless fabric;
• a moving endless pressing blanket for pressing said absorbent paper sheet on said foraminous endless fabric, said moving endless pressing blanket having a void volume of less than about 1500 cm3/m2;
• a transfer cylinder;
• and
• a pressing unit engaging said pressing blanket adapted to urge said nascent web for said absorbent paper sheet on said foraminous endless fabric into engagement with said transfer cylinder thereby forming a nip between said foraminous endless fabric and said transfer cylinder, wherein no pervious member is interposed between said transfer cylinder and said foraminous endless fabric, said pressing unit being configured to create a peak engagement pressure of at least about 2000 kN/m2, and wherein said pressing unit does not include suction pressure rolls.

An apparatus for forming an absorbent paper sheet product comprising:

• a moving foraminous endless fabric;
• means for depositing a nascent web for said absorbent paper sheet on said foraminous endless fabric;
• a moving endless pressing blanket for pressing said absorbent paper sheet on said foraminous endless fabric, said moving endless pressing blanket having a void volume of less than about 1500 cm3/m2;
• a backing roll;
• and
• a pressing unit engaging said pressing blanket adapted to urge said nascent web for said absorbent paper sheet on said foraminous endless fabric into engagement with said transfer cylinder thereby forming a nip between said foraminous endless fabric and said transfer cylinder, wherein no pervious member is interposed between said transfer cylinder and said foraminous endless fabric, said pressing unit being configured to create a peak engagement pressure of at least about 2000 kN/m2 at an overall line load of less than about 240 kN/m, and wherein said pressing unit does not include suction pressure rolls.

An apparatus for forming an absorbent paper sheet product comprising:

• a moving foraminous endless fabric;
• means for depositing a nascent web for said absorbent paper sheet on said foraminous endless fabric;
• a moving endless pressing blanket for pressing said absorbent paper sheet on said foraminous endless fabric, said moving endless pressing blanket having a void volume of less than about 1500 cm3/m2;
• a backing roll;
• and
• a pressing unit engaging said pressing blanket adapted to urge said nascent web for said absorbent paper sheet on said foraminous endless fabric into engagement with said transfer cylinder thereby forming a nip between said foraminous endless fabric and said transfer cylinder, wherein no pervious member is interposed between said transfer cylinder and said foraminous endless fabric, said pressing unit being configured to create a peak engagement pressure of at least about 2000 kN/m2, and wherein said pressing unit does not include suction pressure rolls.

An apparatus for forming an absorbent paper sheet product comprising:

• a moving foraminous endless fabric;
• means for depositing a nascent web for said absorbent paper sheet on said foraminous endless fabric;
• a moving endless pressing blanket for pressing said absorbent paper sheet on said foraminous endless fabric, said moving endless pressing blanket having a void volume of less than about 1500 cm3/m2;
• a transfer cylinder;
• and
• a pressing unit engaging said pressing blanket adapted to urge said nascent web for said absorbent paper sheet on said foraminous endless fabric into engagement with said transfer cylinder thereby forming a nip between said foraminous endless fabric and said transfer cylinder, wherein no pervious member is interposed between said transfer cylinder and said foraminous endless fabric, said pressing unit being configured to create a peak engagement pressure of at least about 2000 kN/m2 at an overall line load of less than about 240 kN/m, and wherein said pressing unit comprises at least one hydraulic engagement member.

An apparatus for forming an absorbent paper sheet product comprising:

• a moving foraminous endless fabric;
• means for depositing a nascent web for said absorbent paper sheet on said foraminous endless fabric;
• a moving endless pressing blanket for pressing said absorbent paper sheet on said foraminous endless fabric, said moving endless pressing blanket having a void volume of less than about 1500 cm3/m2;
• a transfer cylinder;
• and
• a pressing unit engaging said pressing blanket adapted to urge said nascent web for said absorbent paper sheet on said foraminous endless fabric into engagement with said transfer cylinder thereby forming a nip between said foraminous endless fabric and said transfer cylinder, wherein no pervious member is interposed between said transfer cylinder and said foraminous endless fabric, said pressing unit being configured to create a peak engagement pressure of at least about 2000 kN/m2, and wherein said pressing unit comprises at least one hydraulic engagement member.

An apparatus for forming an absorbent paper sheet product comprising;

• a moving foraminous endless fabric;
• means for depositing a nascent web for said absorbent paper sheet on said foraminous endless fabric;
• a moving endless pressing blanket for pressing said absorbent paper sheet on said foraminous endless fabric, said moving endless pressing blanket having a void volume of less than about 1500 cm3/m2;
• a backing roll;
• and
• a pressing unit engaging said pressing blanket adapted to urge said nascent web for said absorbent paper sheet on said foraminous endless fabric into engagement with said transfer cylinder thereby forming a nip between said foraminous endless fabric and said transfer cylinder, wherein no pervious member is interposed between said transfer cylinder and said foraminous endless fabric, said pressing unit being configured to create a peak engagement pressure of at least about 2000 kN/m2 at an overall line load of less than about 240 kN/m, and wherein said pressing unit comprises at least one hydraulic engagement member.

An apparatus for forming an absorbent paper sheet product comprising:

• a moving foraminous endless fabric;
• means for depositing a nascent web for said absorbent paper sheet on said foraminous endless fabric;
• a moving endless pressing blanket for pressing said absorbent paper sheet on said foraminous endless fabric, said moving endless pressing blanket having a void volume of less than about 1500 cm3/m2;
• a backing roll;
• and
• a pressing unit engaging said pressing blanket adapted to urge said nascent web for said absorbent paper sheet on said foraminous endless fabric into engagement with said transfer cylinder thereby forming a nip between said foraminous endless fabric and said transfer cylinder, wherein no pervious member is interposed between said transfer cylinder and said foraminous endless fabric, said pressing unit being configured to create a peak engagement pressure of at least about 2000 kN/m2, and wherein said pressing unit comprises at least one hydraulic engagement member.