Disclosed herein are nonwoven webs and/or unit dose articles comprising a sulfonate modified PVOH fiber forming materials and/or a blend of fiber forming materials comprising polyvinylpyrrolidone and a sulfonate modified PVOH, carboxyl modified PVOH, or both. Also disclosed herein, are said unit dose articles comprising a composition including a harsh chemical.

Disclosed herein are nonwoven webs and/or unit dose articles comprising a sulfonate modified PVOH fiber forming materials and/or a blend of fiber forming materials comprising polyvinylpyrrolidone and a sulfonate modified PVOH, carboxyl modified PVOH, or both. Also disclosed herein, are said unit dose articles comprising a composition including a harsh chemical.

Disclosed is a chemical container capable of discharging gas generated from a chemical by stably securing a discharge passage of the gas even when the posture or tilt of the chemical container is variously changed, i.e. when the chemical container is turned over or falls sideways, whereby it is possible to prevent an excessive increase in internal pressure of the chemical container due to generation of the gas. The chemical container includes a container body having a storage compartment configured to store a chemical, an exhaust port disposed at one side of the container body, the exhaust port being configured to connect the storage compartment and the outside of the container body to each other in such a manner that fluid movement therebetween is possible, an exhaust tube disposed in the storage compartment so as to be connected to the exhaust port in such a manner that fluid movement therebetween is possible, and an exhaust buoyancy unit. The exhaust buoyancy unit has a buoyancy body disposed in the storage compartment in the state of being connected to the exhaust tube so as to float on the chemical stored in the storage compartment, an exhaust channel provided inside the buoyancy body, the exhaust channel being configured to connect the storage compartment and the exhaust tube to each other in such a manner that fluid movement therebetween is possible, and a filter membrane coupled to the buoyancy body, the filter membrane being configured to transmit gas through the exhaust channel and to block the chemical, thereby preventing the chemical from passing therethrough.

A plug for a valve for a container that may contain hazardous materials is provided. The plug may include an outer wall, and one or more keys disposed on an external surface of the outer wall. The keys may be sized and shaped to respectively fit within one or more corresponding notches and one or more circumferential grooves in the valve to secure the plug to the valve.

A packaging unit for one or more of transport or storage of at least one organic peroxide. The packaging unit comprises one or more outer container, such as a transport container and/or a storage container. The packaging unit may also comprise an inner container. The outer container and/or the inner container is filled with the at least one organic peroxide. The packaging unit also comprises one or more extinguishing agent container filled with an extinguishing agent. The extinguishing agent container may be at least one bag and/or at least one bottle. The extinguishing agent container is separately introduced into one or more of a receiving area of the outer container or the inner container. The extinguishing agent container is removable from the outer container. The extinguishing agent container may be detachably connected to or not connected to the outer container, or the extinguishing agent container may be detachably connected to or not connected to the inner container. The extinguishing agent is released from the extinguishing agent container by heat-induced melting, bursting, burning or tearing of the extinguishing agent container.

A packaging unit for one or more of transport or storage of at least one organic peroxide. The packaging unit comprises one or more outer container, such as a transport container and/or a storage container. The packaging unit may also comprise an inner container. The outer container and/or the inner container is filled with the at least one organic peroxide. The packaging unit also comprises one or more extinguishing agent container filled with an extinguishing agent. The extinguishing agent container may be at least one bag and/or at least one bottle. The extinguishing agent container is separately introduced into one or more of a receiving area of the outer container or the inner container. The extinguishing agent container is removable from the outer container. The extinguishing agent container may be detachably connected to or not connected to the outer container, or the extinguishing agent container may be detachably connected to or not connected to the inner container. The extinguishing agent is released from the extinguishing agent container by heat-induced melting, bursting, burning or tearing of the extinguishing agent container.

Exemplary embodiments are disclosed of liners, linings, and liquid containment vessels including the same. Also disclosed are exemplary method of providing liners and linings for liquid containment vessels, such as process tanks, immersion tanks, containment pits, gravity feed conduits for transferring or conveying liquid, etc. In an exemplary embodiment, a liner or lining is anchored to at least one structural component by at least one extrusion weld and at least one mechanical fastener. The mechanical fastener is coupled to the structural component. The extrusion weld is coupled to the mechanical fastener. The liner or lining may be anchored to a wide range of structural components, such as a frame, a framework, a frame member, a tank, a wall, a support member, a reinforcing member, an outer shell, a substrate (e.g., concrete, etc.) or sidewalls defining a pit or a gravity feed conduit, combinations thereof, other structures or components, etc.

Exemplary embodiments are disclosed of liners, linings, and liquid containment vessels including the same. Also disclosed are exemplary method of providing liners and linings for liquid containment vessels, such as process tanks, immersion tanks, containment pits, gravity feed conduits for transferring or conveying liquid, etc. In an exemplary embodiment, a liner or lining is anchored to at least one structural component by at least one extrusion weld and at least one mechanical fastener. The mechanical fastener is coupled to the structural component. The extrusion weld is coupled to the mechanical fastener. The liner or lining may be anchored to a wide range of structural components, such as a frame, a framework, a frame member, a tank, a wall, a support member, a reinforcing member, an outer shell, a substrate (e.g., concrete, etc.) or sidewalls defining a pit or a gravity feed conduit, combinations thereof, other structures or components, etc.

A plug for a valve for a container that may contain hazardous materials is provided. The plug may include an outer wall, and one or more keys disposed on an external surface of the outer wall. The keys may be sized and shaped to respectively fit within one or more corresponding notches and one or more circumferential grooves in the valve to secure the plug to the valve. the plug may be sized and shaped to be inserted into the valve so that the one or more keys of the plug are respectively inserted into the one or more notches, and the one or more keys of the plug are configured to be respectively moved within the one or more circumferential grooves in a first direction as the plug is rotated.

Provided herein are liners, for example, for storing or dispensing high purity chemicals, as well as methods of manufacturing such liners. The liners resist formation of stress-induced breaches. In one aspect, the liner includes a film formed into a liner capable of retaining a liquid. The liner has a first barrier layer to a gas (e.g., oxygen); a second barrier layer to the gas (e.g., oxygen); and at least one additional layer of material disposed interstitially between the first barrier layer and the second barrier layers.