A biodegradable cellulose fiber-based substrate, at least one side of which is coated with a release coating including: a) at least one water-soluble polymer (WSP) containing hydroxyl groups, and b) at least one lactone substituted with at least one linear or branched and/or cyclic C.sub.8-C.sub.30 hydrocarbon chain which may contain heteroatoms. The biodegradable substrate is certified biodegradable in accordance with EN 13432. A method of production thereof is also disclosed.

A cellulose fiber-based substrate, at least one side of which is coated with an aqueous mixture composed of: a) at least one water-soluble polymer (WSP) containing hydroxyl groups, b) at least one lactone substituted with at least one linear or branched and/or cyclic C.sub.8-C.sub.30 hydrocarbon chain which may contain heteroatoms, c) at least one crosslinking agent. A method of production and use thereof.

Apparatuses of a biodegradable magnetic toilet seat cover and methods for manufacturing the same are provided. In one embodiment, a biodegradable magnetic toilet seat cover includes a bottom layer configured to contact with a toilet seat, where the bottom layer is made to prevent elements on the toilet seat from permeating to a skin of a user, a top layer configured to contact with the user, where the top layer is made to provide a comfortable touch to the skin of the user, and a middle layer configured to hold the bottom layer and the top layer together, where the middle layer is further configured to hold the biodegradable magnetic toilet seat cover to the toilet seat magnetically. The biodegradable magnetic toilet seat cover may additionally or optionally include an anti-splashing flap formed with polyvinyl alcohol or viscose spunlace non-woven film, and where the anti-splashing flap is configured to prevent elements from the toilet to reach the user.

A composite structure 10 comprises one or more layers 12 of structural material and one or more layers of adhesive material 28 binding the one or more structural layers together. The one or more layers of structural material are coated with a bonding agent. The one or more layers of adhesive material are at least partially soluble or separable in water. A method of making a composite structure is also provided.

A panel that can be assembled into a container includes a unitary outer wall formed of recyclable plant-fiber pulp and pre-cut to be folded into a box, and one or more pads laminated to the outer wall and covering portions of the outer wall that when folded into the box provide sidewalls and floor of the box such that the pads cover interior surfaces of the sidewalls of the box. Each pad includes a thermally insulative layer of starch and/or cellulose and/or plant fiber pulp.

Apparatuses of a biodegradable magnetic toilet seat cover and methods for manufacturing the same are provided. In one embodiment, a biodegradable magnetic toilet seat cover includes a bottom layer configured to contact with a toilet seat, where the bottom layer is made to prevent elements on the toilet seat from permeating to a skin of a user, a top layer configured to contact with the user, where the top layer is made to provide a comfortable touch to the skin of the user, and a middle layer configured to hold the bottom layer and the top layer together, where the middle layer is further configured to hold the biodegradable magnetic toilet seat cover to the toilet seat magnetically. The biodegradable magnetic toilet seat cover may additionally or optionally include an anti-splashing flap formed with polyvinyl alcohol or viscose spunlace non-woven film, and where the anti-splashing flap is configured to prevent elements from the toilet to reach the user.

Disclosed are a composite gypsum board and a method of preparing composite gypsum board. The board contains set gypsum layers sandwiched between two cover sheets. The set gypsum layers are formed from at least stucco and water. The set gypsum layers include a board core and one or more skim coat layers. The set gypsum core makes up a substantial thickness (e.g., at least about 90%, at least about 92%, at least about 95%, or at least about 97%) of the total thickness of all the gypsum layers. A first skim coat layer is included on one side of the core, facing a first (face) cover sheet. A second skim coat layer is included on the other side of the core, facing a second (back) cover sheet. At least the second skim layer is formed from a slurry that contains starch. The stucco material generally includes a high salt impurity content, for example, when the stucco is calcined from certain sources of low-quality synthetic gypsum. For example, in some embodiments, the salts are chloride salts, e.g., sodium chloride (NaCl), potassium chloride (KCl), magnesium chloride (MgCl.sub.2), and/or calcium chloride (CaCl.sub.2).

A water activated tape and method of producing is provided, the tape comprising a repulpable material, a water-soluble material affixed to the repulpable material, and a water activated adhesive layer affixed to the water-soluble material.

An irreversibly self-destructive security packaging water soluble film and method for manufacturing the same. The water soluble packaging film is embedded with various security elements, which will get irreversibly destroyed upon final usage as the whole package along with its contents will dissolve in water. This process of self-destruction will control the duplication of the package or alteration of the product inside the package.

A multi-layer polymer film comprising at least one middle layer A, the polymeric constituents of which are soluble in aqueous solution, and in each case at least one substantially water-impermeable covering layer B, C arranged above and below the at least one middle layer A, wherein the layers A, B and C independently of each other in each case comprise at least one thermoplastic polymer and at least one of the covering layers B and C comprises at least one polyhydroxyalkanoate is presented and described. Processes for the production of the multi-layer polymer film according to the invention and its use for the production of molded parts, films or bags are furthermore presented and described.