A method for producing an object, wherein the method comprises drying the object or a primary product thereof, the object or a primary product thereof being at least partially dried in at least one drying device, wherein at least one of the at least one drying units contains at least one infrared radiator which is at least partially heated by means of biogas, a combustion gas selected from the group consisting of oxygen, air or other oxygen-containing gases is added to the biogas before said biogas is supplied to the at least one infrared radiator in order to heat said at least one infrared radiator, and the oxygen content in the waste gas resulting from the at least one infrared radiator being heated by means of the biogas is measured by means of a measuring device and the amount of combustion gas added to the biogas.

A method for producing a wet-laid nonwoven fabric web includes the following steps: providing a fibrous web of industrially generated inorganic fibers, or fibers from synthetically generated polymers, and thermally drying the fibrous web in an alternating manner by infrared radiation and hot air, in order for the nonwoven fabric web to be generated.

Provided is technology improving the efficiency (productivity) of a sheet manufacturing apparatus. A sheet manufacturing apparatus 100 manufactures sheets S by heating with heaters 81 and 82 a mixture (second web W2) of resin and fiber produced by defibrating feedstock MA. The heaters 81 and 82 each have a first roller 171, a second roller 172 that holds the second web W2 with the first roller 171, and a moving mechanism 190. The moving mechanism 190 can switch the first roller 171 and second roller 172 to a position holding the second web W2, and a first roller 171 and second roller 172 are separated and do not hold the second web W2. The heaters 81 and 82 are configured as units that can removably installed to the sheet manufacturing apparatus 100.

Provided is technology improving the efficiency (productivity) of a sheet manufacturing apparatus. A sheet manufacturing apparatus 100 manufactures sheets S by heating with heaters 81 and 82 a mixture (second web W2) of resin and fiber produced by defibrating feedstock MA. The heaters 81 and 82 each have a first roller 171, a second roller 172 that holds the second web W2 with the first roller 171, and a moving mechanism 190. The moving mechanism 190 can switch the first roller 171 and second roller 172 to a position holding the second web W2, and a first roller 171 and second roller 172 are separated and do not hold the second web W2. The heaters 81 and 82 are configured as units that can removably installed to the sheet manufacturing apparatus 100.

The present disclosure is drawn to ink fixative solutions, which can consist essentially of a polyvalent metal salt, a holdout additive, and water. The polyvalent metal salt can be present in an amount from about 1 wt % to about 5 wt %, with respect to the entire weight of the ink fixative solution. The holdout additive can be present in an amount from about 2 wt % to about 20 wt %, with respect to the entire weight of the ink fixative solution. The holdout additive can be polyethylene glycol, glycerol, carboxy methyl cellulose, hydroxy ethyl cellulose, a fatty acid, a fatty acid ethoxylate, or combinations thereof.

The present disclosure is drawn to ink fixative solutions, which can consist essentially of a polyvalent metal salt, a holdout additive, and water. The polyvalent metal salt can be present in an amount from about 1 wt % to about 5 wt %, with respect to the entire weight of the ink fixative solution. The holdout additive can be present in an amount from about 2 wt % to about 20 wt %, with respect to the entire weight of the ink fixative solution. The holdout additive can be polyethylene glycol, glycerol, carboxy methyl cellulose, hydroxy ethyl cellulose, a fatty acid, a fatty acid ethoxylate, or combinations thereof.

[Problem] To provide a contamination preventing agent composition capable of effectively preventing pitch contamination in a dry part. [Solution] The present invention relates to a contamination preventing agent composition for preventing pitch contamination in a dry part D of a papermaking process, the composition containing: a linear polysiloxane compound represented by formula (1); and a cyclic siloxane compound. [In formula (1), a substituent R.sup.1 represents, in the same molecule, a hydrogen atom, an alkyl group, a methylphenyl group, a polyether group, a higher fatty acid ester group, an amino-modified group, an epoxy-modified group, a carboxylic group, a phenol group, a mercapto group, a carbinol group, or a methacrylic group, and a repeating number n of a siloxane unit represents an integer of 20-1430.]

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A pre-dryer for continuous feed or cut sheet systems is described. Such a module can be used in various applications, for example, prior to printing where the time constant for fusing and glossing is long enough that the substrate temperature essentially equilibrates with that of the marking material on the surface of the sheet. The pre-dryer may be part of an image forming device. Substrates, including paper, typically have high moisture content in normal atmospheric conditions. Such substrates may have a moisture content of about 10% water by weight, which is considered high for printing. Such high moisture content in image receiving substrates leads to various artifacts and extends heating times to take the substrate to its glossing temperature that are about four times longer than for dry media. This longer heating time translates to undesirably longer paper paths or nip lengths.

The machine (10) comprises a Yankee cylinder (35), having a cylindrical side surface (35S), rotating around an axis (35A) thereof, and a continuous flexible member (17) comprising a first surface (17A) suitable to receive a layer of cellulose pulp (S), comprising cellulose fibers and water, and a second surface (17B), opposite to the first surface (17A). A guide roller (31) is also provided, around which the continuous flexible member (17) is driven. The second surface (17B) of the continuous flexible member (17) is in contact with the first guide roller (31). The machine further comprises a first pressure roller (33) around which the continuous flexible member (17) is driven, arranged downstream of the guide roller (31) with respect to a feeding direction of the layer of cellulose pulp (S). The first pressure roller (33) and the Yankee cylinder (35) define a first pressure nip (34), inside which the continuous flexible member (17) is pressed by means of the first pressure roller (33) against the cylindrical surface (35S) of the Yankee cylinder (35) in order to remove water from the layer of cellulose pulp (S) through the continuous flexible member (17).

The machine (10) comprises a Yankee cylinder (35), having a cylindrical side surface (35S), rotating around an axis (35A) thereof, and a continuous flexible member (17) comprising a first surface (17A) suitable to receive a layer of cellulose pulp (S), comprising cellulose fibers and water, and a second surface (17B), opposite to the first surface (17A). A guide roller (31) is also provided, around which the continuous flexible member (17) is driven. The second surface (17B) of the continuous flexible member (17) is in contact with the first guide roller (31). The machine further comprises a first pressure roller (33) around which the continuous flexible member (17) is driven, arranged downstream of the guide roller (31) with respect to a feeding direction of the layer of cellulose pulp (S). The first pressure roller (33) and the Yankee cylinder (35) define a first pressure nip (34), inside which the continuous flexible member (17) is pressed by means of the first pressure roller (33) against the cylindrical surface (35S) of the Yankee cylinder (35) in order to remove water from the layer of cellulose pulp (S) through the continuous flexible member (17).