Provided are a manufacturing and quality testing method and a manufacturing device for a printed product capable of resisting abnormal environmental changes and operating in all weather and suitable for hygiene management operations, as well as the printed product, which relate to the technical field of printing. The manufacturing and quality testing method for the printed product includes the following steps: selecting a material for producing a content component of the product, the material having a structure that exhibits bi-characteristics; preparing a polyurethane adhesive; forming waterproof and weather-resistant images on a sheet material of the content component of the product by an appropriate printing method; performing connecting between the content component of the weather-resistant product and a cover; and sampling and testing are performed to assure quality during the process of manufacturing the product capable of operating in all weather and capable of being disinfected and washed. The printed product can resist extreme temperatures and operate in all weather under abnormal environments, and is cost-effective and durable.

Pressware products made from paperboard and methods for making same. The product can include a paperboard substrate and a compostable barrier coating, as determined by ASTM D6868-19, that is at least partially disposed on the paperboard substrate. The product can also include a paperboard substrate and a first compostable coating at least partially disposed on the paperboard substrate. The first compostable coating can include clay particles and less than 50 wt % binder, based on the total weight of the first compostable coating, wherein the binder is compostable, as determined by ASTM D6868-19. A second compostable barrier coating, as determined by ASTM D6868-19, can be at least partially disposed on the first compostable coating. The resulting pressware product is compostable, as determined by ASTM D6868-19.

Pressware products made from paperboard and methods for making same. The product can include a paperboard substrate and a compostable barrier coating, as determined by ASTM D6868-19, that is at least partially disposed on the paperboard substrate. The product can also include a paperboard substrate and a first compostable coating at least partially disposed on the paperboard substrate. The first compostable coating can include clay particles and less than 50 wt % binder, based on the total weight of the first compostable coating, wherein the binder is compostable, as determined by ASTM D6868-19. A second compostable barrier coating, as determined by ASTM D6868-19, can be at least partially disposed on the first compostable coating. The resulting pressware product is compostable, as determined by ASTM D6868-19.

The present invention is intended to enhance the transparency of a composition obtained using ultrafine cellulose fibers having phosphorous acid groups, while suppressing the yellowing of the ultrafine cellulose fibers. The present invention relates to cellulose fibers having a fiber width of 1000 nm or less and having a phosphorus oxoacid group or a phosphorus oxoacid group-derived substituent, wherein when a first amount of dissociated acid in the cellulose fibers is set to be A1 and a total amount of dissociated acid in the cellulose fibers is set to be A2, A1 is 1.35 mmol/g or more, and the value of A1/A2 is 0.51 or more, and when a sheet is formed under a predetermined condition, the YI value of the sheet is 6.0 or less.

The present invention is intended to enhance the transparency of a composition obtained using ultrafine cellulose fibers having phosphorous acid groups, while suppressing the yellowing of the ultrafine cellulose fibers. The present invention relates to cellulose fibers having a fiber width of 1000 nm or less and having a phosphorus oxoacid group or a phosphorus oxoacid group-derived substituent, wherein when a first amount of dissociated acid in the cellulose fibers is set to be A1 and a total amount of dissociated acid in the cellulose fibers is set to be A2, A1 is 1.35 mmol/g or more, and the value of A1/A2 is 0.51 or more, and when a sheet is formed under a predetermined condition, the YI value of the sheet is 6.0 or less.

An egg carton and method and apparatus for forming an egg carton. A main body of the egg carton may be made of a single sheet of material and folded or otherwise bent to form the majority of the carton's interior space. Partition walls may be engaged with slots formed in the main body to define separate storage areas of the interior space as well as help hold the main body in the desired configuration. Hooks on the sides of the partition walls may engage with openings in the main body to secure the main body to the partition walls.

An egg carton and method and apparatus for forming an egg carton. A main body of the egg carton may be made of a single sheet of material and folded or otherwise bent to form the majority of the carton's interior space. Partition walls may be engaged with slots formed in the main body to define separate storage areas of the interior space as well as help hold the main body in the desired configuration. Hooks on the sides of the partition walls may engage with openings in the main body to secure the main body to the partition walls.

To provide a cellulose fiber molded product having improved tensile elastic modulus, preferably a cellulose fiber molded product also having improved tensile strength, and a method for manufacturing the same. A cellulose fiber molded product contains cellulose fibers as the main component, in which the cellulose fibers contain pulp and defibrated fibers, and the defibrated fibers contain microfibrillated cellulose. For manufacturing the molded product, a cellulose fiber slurry is prepared using the pulp and the defibrated fibers, wet paper is formed from the cellulose fiber slurry, and the wet paper is dehydrated, pressurized, and heated. At this time, as the defibrated fibers, microfibrillated cellulose, or microfibrillated cellulose and cellulose nanofibers are used.

To provide a cellulose fiber molded product having improved tensile elastic modulus, preferably a cellulose fiber molded product also having improved tensile strength, and a method for manufacturing the same. A cellulose fiber molded product contains cellulose fibers as the main component, in which the cellulose fibers contain pulp and defibrated fibers, and the defibrated fibers contain microfibrillated cellulose. For manufacturing the molded product, a cellulose fiber slurry is prepared using the pulp and the defibrated fibers, wet paper is formed from the cellulose fiber slurry, and the wet paper is dehydrated, pressurized, and heated. At this time, as the defibrated fibers, microfibrillated cellulose, or microfibrillated cellulose and cellulose nanofibers are used.

The present disclosure provides a laminated biodegradable product, comprising a first functional layer in the form of a three-dimensional molded pulp structure, a functional second layer of a cellulose based material, and an overlap region, in which the first layer and the second layer overlap each other and are connected to each other.