278results about "Biocidal agent addition" patented technology

The invention discloses a polyhydroxyalkanoate water-based barrier coating composition and application, and belongs to the technical field of packaging materials. The composition takes water as a dispersion medium and comprises polyhydroxyalkanoate, a plasticizer, an emulsifier and an inorganic nano filler. The stable emulsion with the volume average particle size of 400-700nm is prepared under specific proportioning and process conditions. After the emulsion is applied to a paper substrate according to the dry film coating weight of 10-12 g / m, the obtained coating shows good comprehensive performance: the oxygen permeability is not higher than 580 cm / m.d, the water vapor permeability is not higher than 290 g / m.d, and the heat sealing strength at 130 DEG C is not lower than 5.0 N / 15 mm. The biodegradable paper-based packaging film does not contain fluorine compounds, can be completely biodegraded, and provides a technical path for sustainable paper-based packaging.

The invention discloses degradable coated paper and a preparation method thereof, and belongs to the field of high polymer materials. Aiming at the problem of single function of the existing coated paper, the invention provides the degradable coated paper, the degradable coated paper comprises backing paper and a coated layer, and the coated layer comprises the following components in parts by weight: 50-80 parts of polylactic acid and 10-25 parts of poly (ethylene terephthalate) succinate; the plastic is prepared from the following components in parts by weight: 1-5 parts of biodegradable chitosan, 10-20 parts of modified talcum powder, 0.3-1.0 part of a plasticizer, 0.2-1.0 part of a lubricant, 0.2-0.5 part of an antioxidant and 0.2-0.5 part of a compatilizer. The antibacterial purpose is achieved by selecting the degradable chitosan, and meanwhile the mechanical performance of the coated paper is not affected; the purposes of heat preservation, cost reduction and efficiency improvement are achieved through the modified talcum powder, so that the finally prepared degradable coated paper has multiple functions of degradability, heat preservation and antibiosis; meanwhile, all the used raw materials are biodegradable, so that the environment-friendly significance is higher. The operation is simple, the convenience and the efficiency are higher, and the use prospect is higher.

The invention belongs to the technical field of new materials, and discloses an antibacterial agent, a preparation process and a preparation process of antibacterial decorative paper.The antibacterial agent is prepared from 40-50 parts of tea polyphenol and 20-50 parts of abelmoschus manihot gum. The antibacterial agent prepared by selecting tea polyphenol as a main antibacterial substance is applied to an impregnation process of impregnated bond paper of a veneer artificial board, the veneer artificial board is endowed with spectral antibacterial performance, and compared with chemical synthetic antibacterial agents and metal antibacterial agents, the antibacterial agent has the characteristics of high efficiency, safety, no toxicity and lasting antibacterial property. The antibacterial agent provided by the invention has excellent uniform dispersibility in melamine glue, UV paint and water-based paint, and the original production process of facing artificial boards and wood floors is not changed. According to the test standard of JC / T2039-2010 antibacterial mildew-proof wooden decorative sheet, the antibacterial performance of the product on staphylococcus aureus and escherichia coli can easily reach more than 99.99%, and the antibacterial durability of the product after 5000 times of washing is also more than 99.99%.

The invention discloses a bacteriostatic and antiviral bamboo pulp paper-based sanitary isolation bag as well as a preparation method and application thereof, and belongs to the field of functional paper-based packaging materials. The isolation bag takes bamboo pulp fiber paper as a base material, and the surface of the isolation bag is coated with a water-based polyhydroxyalkanoate functional coating. According to the preparation method, a special polyphenol derivative-chitosan quaternary ammonium salt-nano zinc oxide organic-inorganic hybrid factor is introduced, and the problem of agglomeration of nano particles is effectively solved by utilizing the special bridging effect of polyphenol, so that high-density cation capture and oxidation inactivation sites are constructed on the surface of the coating. Compared with the prior art, the method has the advantages that the method does not need to depend on organic fluorine compounds, and the excellent waterproof and oil-proof barrier effect and the efficient inactivation of viruses can be achieved only through the extremely low coating amount. In addition, the isolation bag has unique environmental chemical responsiveness, can be efficiently dissociated under the alkaline condition to facilitate repulping recovery, can be completely biodegraded in the natural environment, and perfectly considers the requirements of biological safety protection and green environmental protection.

The invention relates to the technical field of antibacterial and antiviral plates, and discloses a composite antibacterial and antiviral plate and a composite antibacterial and antiviral agent.The composite antibacterial and antiviral plate comprises two base materials, balance layers are arranged at one ends of the two base materials, and adhesives are arranged between the two base materials and the two balance layers; according to the composite antibacterial and antiviral plate, a novel composite antibacterial and antiviral agent is formed by combining multiple antibacterial and antiviral technologies, compared with a common antibacterial or antiviral plate, the antibacterial and antiviral plate has the synergistic interaction effect, the antibacterial and antiviral effect is good, and the service life of the antibacterial and antiviral plate is prolonged. Compared with the prior art, the preparation method has the advantages that the single antibacterial or antiviral function is increased by 30%, antibacterial and antiviral components are more uniformly dispersed in a system through synergistic interaction and a porous nanostructure, consumption of effective components is reduced through ion replacement, the effect of slow release of the effective components is achieved, and the antibacterial and antiviral aging life is prolonged.

The invention belongs to the technical field of cultural relic protection, and particularly relates to a preparation method of an antibacterial hydrophobic coating for stone cultural relic protection. According to the method, an attapulgite / copper-iron prussian blue analogue / silver nano composite material is synthesized by adopting a simple wet chemical method and an electrochemical replacement method, in the preparation process, natural nano rodlike mineral attapulgite is used as a carrier, and prussian blue analogue nano particles are loaded on the surface of the carrier by adopting an in-situ precipitation method; the antibacterial property of the natural mineral material is effectively improved; furthermore, nano Ag is used for modifying the Prussian blue analogue, so that the killing effect of the composite material on bacteria and fungi can be effectively enhanced, the photo-thermal performance of the Prussian blue analogue can be improved, and the purpose of long-acting bacteriostasis is achieved; and finally, carrying out hydrophobic treatment on the coating by using fluorinated silane to obtain the antibacterial hydrophobic self-cleaning coating for protecting the stone cultural relics.

The paper material includes a base support having a mixture of cellulose fibres and other natural and / or synthetic fibres, at least one polymeric substance adapted to impart to the fibre mixture mechanical resistance, water resistance and a functional barrier to water, fats and oils, and an inorganic filler. The base support has at least one surface coat at least having an adhesive, transition metal complexes, isothiazolone-based compounds and inorganic pigments imparting barrier properties towards water, fats and oils, a metallic or matt appearance, and a virucidal and biocidal effect.

The invention relates to the technical field of agricultural paper, in particular to double anti-mite fruit cultivating bag paper and a preparation method thereof. The preparation method comprises the following steps: pulping: respectively pulping natural-color bamboo pulp and natural-color softwood pulp, then mixing, adding water, and uniformly mixing to obtain pulp; papermaking: sequentially adding iron oxide yellow, aluminum sulfate, rosin size and a wet strength agent into the pulp, adding water for dilution, and drying after papermaking to obtain fruit cultivating bag body paper; sizing: taking oxidized cassava starch, adding water, preparing starch slurry, heating, continuously stirring until the starch is completely gelatinized, taking starch gelatinized liquid, adding neem oil, putting into a high-speed homogenizing emulsifying machine, emulsifying to obtain neem oil anti-mite emulsion, uniformly mixing the neem oil anti-mite emulsion with wax emulsion to obtain anti-mite glue liquid, immersing the fruit cultivating bag body paper into the anti-mite glue liquid, and drying to obtain the fruit cultivating bag. And taking out and drying to obtain the double anti-mite fruit cultivating bag paper. The composite material has physical barrier and long-acting anti-mite functions, and the risk of insect attack invasion is greatly reduced.

The present disclosure provides a coating composition and a process for its preparation. The coating composition of the present disclosure has good spreadability / coverage capacity compared to the conventional coating composition. The present disclosure provides a simple, economic and environment friendly process for the preparation of the coating composition.

The invention discloses a straw fiber-based antibacterial mulching film with temperature and humidity response performance and a preparation method, and belongs to the technical field of agricultural mulching films, the straw fiber-based antibacterial mulching film with temperature and humidity response performance comprises a bottom film layer, a slow release layer and a barrier layer in sequence from bottom to top; the slow-release layer is obtained by coating the base film layer with a mixed solution of acetic acid, a bactericide, gelatin and a plasticizer; the barrier layer is obtained by coating palm wax emulsion on the surface of the slow release layer. According to the invention, palm wax, a bactericide (carbendazim), gelatin and a wheat straw fiber-based mulching film are combined to construct the wheat straw fiber-based temperature and humidity response type bacteriostatic mulching film. The straw fiber-based antibacterial mulching film can respond according to the change of environmental temperature and humidity to realize accurate release of pesticides, so that diseases are accurately regulated and controlled.

The invention provides multifunctional composite fiber reinforced decorative base paper and a preparation method thereof. The decorative base paper is prepared from the following raw materials in parts by weight: 30-60 phr of wood pulp fibers, 15-35 phr of bamboo fibers, 1-10 phr of polyester fibers, 1-10 phr of polyamide fibers, 57-91 phr of an antibacterial reinforcing agent, 3-20 phr of a flame retardant and 1-10 phr of nano cellulose. The antibacterial reinforcing agent is prepared from the following components in parts by weight: 1 to 5 phr of silver nitrate, 3 to 10 phr of tetrabutyl titanate, 2 to 8 phr of sulfydryl modified chitosan, 50 to 70 phr of absolute ethyl alcohol and 2 to 6 phr of plant essential oil; the flame retardant is a composition of ammonium polyphosphate and aluminum hydroxide wrapped by chitosan. According to the invention, the composite fiber prepared by compounding four fibers is used, and the antibacterial agent, the flame retardant and the nano cellulose are added to supplement functionality, so that the multifunctional composite fiber reinforced decorative base paper with high strength, excellent wear resistance and excellent antibacterial performance is obtained, and the fireproof performance of the multifunctional composite fiber reinforced decorative base paper reaches the national B1-level fireproof standard.

The invention provides a preparation method of environment-friendly straw paper with hydrophobic and lip-sticking-free properties. The preparation method comprises the following steps: respectively pulping bleached softwood pulp and bleached hardwood pulp, and mixing to obtain a fiber mixture; adding a biological wax waterproof system sizing agent into the fiber mixture, or adding the biological wax waterproof system sizing agent and an antibacterial agent, and adding a wet strength agent and an alkyl ketene dimer, and carrying out net forming treatment; the preparation method comprises the following steps: carrying out squeezing dehydration and primary drying treatment on paper pulp subjected to net forming treatment, carrying out surface coating and sizing by adopting a sizing system containing a biological wax waterproof system sizing agent, carrying out secondary drying treatment, and finally sequentially carrying out calendering and coiling to obtain the environment-friendly straw paper. Experiments show that the straw paper disclosed by the invention has the advantages of excellent hydrophobicity, no lip sticking, high strength, high antibacterial property, complete degradability, no toxicity and environment friendliness.

The invention discloses a preparation method of high-toughness dust-free paper, and relates to the technical field of dust-free paper preparation, the high-toughness dust-free paper comprises 10-60 parts of a first layer, 10-30 parts of a second layer and 10-20 parts of a third layer, the first layer comprises wood pulp fiber, the second layer comprises polypropylene fiber, the third layer comprises high-molecular water-absorbent resin and aramid fiber, and the third layer comprises water-absorbent resin and aramid fiber. The wood pulp fibers have the characteristic of soft texture, so that the dust-free paper does not scratch or damage the surface of an object in the wiping process, and the polypropylene fibers and the aramid fibers are added, so that the strength and the toughness of the dust-free paper are further enhanced, the dust-free paper is more durable, the dust-free paper can be kept stable in a severe working environment, and the service life of the dust-free paper is prolonged. The dust-free paper is not easy to age or deform, and the molecular structure of the aramid fibers can keep stable under high-temperature and high-pressure occasions, so that static electricity generated in the use process of the dust-free paper can be effectively reduced, and sensitive equipment and components are protected from being damaged by the static electricity.

There is provided a technology capable of controlling the occurrence of “migration” of a foam material to a contact object.The present technology provides a package material containing: a fibrous material that includes waste paper and / or pulp; a binder; sodium hydrogen carbonate; a surfactant; and a water-soluble softener, the water-soluble softener being a urea derivative having a chemical structural formula of R1,R2—N—CO—N—R3,R4 (R1 to R4 are each H or a saturated and / or unsaturated hydrocarbon group having 1 to 4 carbon atoms) and / or a water-soluble polyhydric alcohol having 3 to 15 carbon atoms, the number of carbon atoms and the number of hydroxyl (OH) groups in a molecular structure of the water-soluble polyhydric alcohol satisfying a relationship of the number of hydroxy groups<the number of carbon atoms.

The invention provides a special reinforcing agent for coated paper, which is prepared from the following raw materials in parts by mass: 10 parts of polyvinyl alcohol; 1 to 3 parts of cationic polyacrylamide; 1-5 parts of a bactericide; 1 to 5 parts of a defoaming agent; 5 to 10 parts of a VAE emulsion; 5 to 10 parts of paraffin emulsion; 1 to 3 parts of redispersible latex powder; 2 to 4 parts of borax; 1-3 parts of a filler; 0.5 to 1.5 parts of cellulose; and 43.5 to 73.5 parts of deionized water. The special reinforcing agent for the coated paper is used as a prime coat paint and is used for prime coat of common fiber papermaking to form a prime coat layer, so that the obtained coated base paper has higher surface strength and better moisture resistance and smoothness, and can be used for preparing high-quality coated paper.

The invention discloses a dispersible plant antibacterial wet toilet paper and a preparation method thereof, the dispersible plant antibacterial wet toilet paper comprises a dispersible non-woven fabric and a wet toilet paper feed liquid, and the dispersible non-woven fabric is made of imported raw wood pulp; the wet toilet paper material liquid is prepared from the following raw materials in percentage by weight: 1, 8-cineole, terpinen-4-ol, lactic acid, an auxiliary agent, a natural plant extract, a humectant, a preservative, a stabilizer, PEG-400, Australian tea tree essential oil, essence and RO (Reverse Osmosis) pure water. The plant antibacterial wet toilet paper disclosed by the invention not only has good dispersion performance and high wet strength, but also has the advantages of mildness, no irritation, safety in use, plant antibacterial property, moisture retention, skin moistening, quietness, elegance and faint scent; and moreover, the environment-friendly plastic can be completely biodegraded, so that the pollution to the environment can be effectively reduced.

The invention discloses a packaging box special for medical treatment, and relates to the field of packaging boxes for medical treatment. The plant fiber composite material is prepared from the following raw materials in parts by weight: 80-95 parts of plant fiber slurry, 3-10 parts of chitosan, 5-15 parts of polylactic acid, 1-5 parts of nano silicon dioxide, 0.5-3 parts of an environment-friendly water repellent agent, 2-8 parts of reinforced fibers, 3-8 parts of a reversible moisture absorption phase change material and 0.1-0.5 part of a degradation indicating pigment. The plant fiber slurry is adopted as a bio-based framework, chitosan microfibers, polylactic acid, nano silicon dioxide, a reversible moisture absorption phase change material and other functional components are innovatively introduced, and an antibacterial trigger layer and degradation indication pigment on the inner surface are matched, so that the packaging box keeps good mechanical strength and structural stability, and meanwhile the packaging box has the advantages that the packaging box is not prone to deformation, and the service life is prolonged. And multiple functions of active on-demand antibiosis, dynamic humidity adjustment, visual degradation tracking and full bio-based degradability are achieved.

The invention belongs to the technical field of tea filter paper manufacturing, and particularly relates to a green environment-friendly antibacterial tea filter paper manufacturing process which comprises the following steps: S4, calendaring and processing: calendaring wet paper through a calendaring machine to enable the surface to be smoother, processing according to needs, cutting into filter paper sheets with specific sizes, and cutting the filter paper sheets into filter paper sheets with specific sizes; and S4, the calender comprises a supporting beam used for supporting, a control cabinet is fixedly installed on the upper surface of the supporting beam, a calendering mechanism is arranged on the upper surface of the supporting beam, a shearing mechanism is arranged above the calendering mechanism, and a sorting mechanism is arranged below the calendering mechanism. According to the manufacturing process of the green and environment-friendly antibacterial tea filter paper, a speed reducing motor drives a linkage oblique bevel gear at the lower end to rotate, and then relative rotation of an inner sleeve and an outer sleeve is achieved under two driving oblique bevel gears and a linkage oblique bevel gear at the upper end, so that relative rotation of a connected shearing plate can be achieved, and the filter paper can be clamped and sheared off.

The invention discloses an antibacterial and bacteriostatic bamboo-wood fiber-based food material packaging box and a preparation method thereof, and relates to the technical field of packaging materials. The packaging box is composed of a paper base layer and an antibacterial coating on the surface of the paper base layer. Wherein the paper base layer is made of mixed paper pulp; the antibacterial coating is obtained by coating the surface of the paper base layer with an antibacterial coating; the antibacterial coating is prepared from the following raw materials in parts by mass: 30 to 40 parts of deionized water, 2 to 2.4 parts of polyvinyl alcohol, 1.2 to 1.5 parts of glycerol, 6.7 to 7.3 parts of antibacterial particles, 0.1 to 0.4 part of rosmarinic acid and 0.5 to 0.8 part of modified silicon dioxide; the antibacterial particles are formed by mesoporous carrier materials loaded with wormwood essential oil. Due to the introduction of components such as the antibacterial particles and the modified silicon dioxide, the long-acting antibacterial, waterproof and fresh-keeping capacities of the bamboo-wood fiber-based food material packaging box are effectively improved. Therefore, the method has a wide application prospect.

The invention discloses a preparation method of a high-strength water-resistant special functional paperboard, and belongs to the technical field of papermaking, the high-strength water-resistant special functional paperboard sequentially comprises a surface sizing layer, a surface paper layer, a core paper layer, a bottom paper layer and a bottom sizing layer from top to bottom, and the surface paper layer, the core paper layer and the bottom paper layer are made of waste paper pulp. The surface sizing layer and the bottom sizing layer are made of environment-friendly glue, through the surface paper layer, the core paper layer and the bottom paper layer, the functional paper has higher paperboard physical strength and better water resistance, and the functional paper is environmentally friendly, efficient and remarkable in superiority.

The invention discloses a preparation process of a copper-based nano antibacterial coating, aiming at solving the problems that the traditional antibacterial coating has no complete inhibition and decomposition effect on mould due to factors such as simplification of a production process and the like, musty odor is difficult to thoroughly remove, and residual mould spores cause health problems and the like. The reason is that the self morphological structure of the antibacterial material is not uniformly distributed in the coating, and the oxidation degree is insufficient, so that the self bactericidal performance is influenced. According to the invention, a binary homogeneous high-pressure jet crushing and mixing preparation process is adopted, and the particle size of the copper-based nano-antibacterial material is below 300nm after the copper-based nano-antibacterial material is crushed and prepared by a homogeneous high-pressure jet collision process, so that the copper-based nano-antibacterial material is densely and uniformly distributed in the coating, and the effects of fully purifying formaldehyde and thoroughly inhibiting mould are achieved.

This invention relates to a surface antibacterial method for cardboard boxes used for fruit preservation, belonging to the field of cardboard coating technology. The method involves preparing a base solution, curing and modifying capsules, and treating with a treatment solution to obtain a coating liquid. This coating liquid is then applied to the surface of the cardboard box to obtain a cardboard box with surface antibacterial properties for fruit preservation. Through intermolecular interactions, the connection between the coating and the cardboard box surface is innovatively strengthened, as well as the connection between the antibacterial components and the porous capsules, achieving long-lasting antibacterial effects and resulting in excellent fruit preservation.

The layer fibrous product comprises at least one layer selected from the group consisting of a nonwoven layer and a tissue layer wherein the at least one layer selected from the group consisting of a nonwoven layer and a tissue layer comprises cellulosic fibers comprising an organic polycarboxylic acid, and wherein the organic polycarboxylic acid has at least one carboxyl group and at least one free carboxyl group covalently bound to the cellulosic fibers. Since there is a covalent chemical bond between the carboxyl group of the polycarboxylic acid and the hydroxyl groups of the cellulosic fibers present in all substrates, the layered fiber product exhibits a lasting acidic pH even after having been rinsed with water. In some embodiments, a persistent acidic pH may be achieved in a nonwoven treated with an organic polycarboxylic acid even after washing with a detergent.

The invention relates to a process for modifying wood through a high-stability composite nano material, and belongs to the technical field of wood modification. The technology for modifying the wood through the high-stability composite nanometer material comprises the following steps that the wood is cleaned and dried, and pretreated wood is obtained; the preparation method comprises the following steps: dissolving a functional monomer, hydroxyl acrylamide and allyl glycidyl ether in absolute ethyl alcohol, adding a titanate coupling agent and an initiator, and stirring and mixing to obtain modified liquid; and the pretreated wood is soaked in the modified liquid for dipping treatment, the wood is taken out, deionized water is sprayed to the surface of the wood, aging and heating heat preservation treatment are conducted, vacuum drying is conducted till the weight is constant, and the wood is obtained. According to the method, a nano titanium dioxide material can be effectively combined with a wood matrix, and meanwhile, the hydrophobicity, the antibacterial property and the compressive strength of the wood are remarkably improved.

This invention discloses a method for preparing zero-VOCs degradable seedling paper, comprising the following steps: S1, raw material selection: the fiber raw material includes 75-85% cattail and 15-25% reed by mass fraction; S2, the fiber raw material described in S1 is sequentially processed through the following steps: cattail + reed → vertical cooking → closed screening → pulp washing → oxygen delignification → pulp concentration → unbleached chemical straw pulp → storage tower → extruder → high-consistency mill → anti-fouling tank → conical refiner → pulp mixing tank → pulp forming tank → sand removal → screening → wire forming → pressing → pre-drying → surface sizing → post-drying → calendering, to obtain seedling paper that meets the requirements for ecological agricultural paper. The seedling paper obtained by this invention has good air permeability and high dry and wet strength, weather resistance to wind and rain erosion and trampling, can achieve natural microbial degradation in soil, and all raw materials are zero-VOCs degradable and sustainable, making it green, environmentally friendly and harmless to the soil.

The invention discloses a coating for cigarette packaging paper with tobacco fragrance as well as a preparation method and application of the coating. The coating is composed of a pigment, an adhesive, tobacco tar and a functional auxiliary agent, and the cigarette packaging paper with the tobacco flavor can be prepared by adopting an off-machine coating or in-machine coating method, a blade coating method, an air blade coating method, a metering rod coating method, a curtain type coating method or other film transfer coating methods. The tobacco tar is used for preparing the coating for the cigarette packaging paper, the cigarette packaging paper produced by utilizing the coating has the natural fragrance of tobacco, and due to the adsorption and slow release effects of pigments in the coating, the fragrance is long-acting and lasting; the adhesive in the coating solves the problem of moisture absorption of paper caused by use of tobacco tar, so that the paper has self-adaptive adjustment performance of'moisture retention and moisture retention '. The identification degree and the anti-counterfeiting function of the product can be improved by utilizing the color characteristics of the coating, so that the added value of the product is improved. The invention provides a new way for high value-added utilization of the tobacco tar.

The invention provides mildew-proof decorative paper as well as a preparation method and application thereof, and relates to the field of mildew-proof decorative paper. The preparation method of the mildew-proof decorative paper comprises the following steps: preparing a core-shell composite particle dispersion liquid, preparing a mildew-proof agent, and mixing and manufacturing paper with pulp. According to the preparation method of the mildew-proof decorative paper, the problem that the whiteness, the opacity, the mechanical strength and the weather resistance of the mildew-proof decorative paper are influenced by directly adding the mildew preventive can be effectively avoided, and the whiteness, the opacity, the mechanical strength and the weather resistance of the mildew-proof decorative paper are effectively improved; and the surface smoothness, the veneer glue penetration grade, the veneer peel strength and the water-resistant and mildew-proof performance of the veneer artificial board prepared from the wood-plastic composite material are further improved.

Provided are a bacterial nanocellulose transparent film, a manufacturing method thereof, and a packaging material including a food packaging material or an electronic product packaging material using the same capable of newly manufacturing a bacterial nanocellulose transparent film with an oxygen barrier property, a moisture barrier property, or a UV barrier property by performing electron beam irradiation and a film process on bacterial cellulose.

The invention relates to a method for manufacturing a fibrous web, such as web of paper, board, tissue or the like. The method comprises obtaining at least one fibre suspension of lignocellulosic and / or cellulosic fibres and feeding the fibre suspension into an intermediate residence entity, such as pulper, storage tower or broke tower. Fibre suspension, which comprises bacterial endospores, is discharged out of the intermediate residence entity via an outlet after a residence time of at least 2 hours in the intermediate residence entity and after a time delay the fibre suspension is formed into a fibrous web. Bacterial endospores are sensitised by adding a germinant surfactant, which comprises a primary or secondary ammonium head group and a linear unsubstituted C12-alkyl tail, to the fibre suspension at an addition point, which is located at the lower part of the intermediate residence entity or after the outlet of the intermediate residence entity, but before the formation of the fibrous web.

The invention discloses a degradable paper pulp packaging product suitable for tomato transportation and storage and a preparation method thereof.The method comprises the following steps that S1, functional auxiliaries are added into pulp and stirred and mixed, then modified polyamide-epichlorohydrin resin is added, bagasse is added and stirred and mixed, uniform stirring is performed, the pulp is mixed, and a mixture is obtained; the modified polyamide-epichlorohydrin resin is prepared by mixing polyamide-epichlorohydrin resin and cationic starch; s2, the mixed slurry is subjected to vacuum adsorption, dehydration and forming, and a wet blank is obtained; s3, the wet blank is heated, dried and shaped, and a packaged semi-finished product is obtained; s4, sterilizing the packaged semi-finished product prepared in the step S3 to obtain a bagasse paper pulp packaged crude product; and S5, the packaging crude product prepared in the step S4 is subjected to a film coating procedure, an antibacterial coating is coated, and the bagasse paper pulp packaging product suitable for tomato packaging is obtained.