Polymer compositions containing polyethylene particles having a multi-modal molecular weight distribution are disclosed. The polymer compositions are well suited to producing porous substrates through a sintering process. Formulations made according to the present disclosure can produce porous substrates having improved flexibility demonstrated by an increased flexural strength while still retaining excellent pressure drop characteristics.

Embodiments of the invention are directed to a multi-component nib structure and marking device for selectively generating primary marks and a secondary marks for lettering and shading. The marking device includes a multi-component nib structure, an ink source. The multi-component nib structure generally includes a first nib component, a second nib component, and optionally, a transfer component between the first nib component and the second nib component. In other aspects, the multi-component nib structure may allow lettering with different tones creating, for example, an ombre effect.

An applicator includes a body, an application member, a storage for a liquid applying material, a liquid applying material absorbing body configured to adjust an amount of impregnation, and a first plug configured to cause a rear end side of the application member to be inserted through an insertion hole to hold the application member. The first plug is configured to expose the rear end side of the application member to a side of the storage. A storage region is configured to be increased and decreased by changing a position of a second plug. The absorbing body is mounted to a distal end and is cuttable.

A writing tool includes a writing unit, a capillary member, a dispensing unit, and a replaceable ink cartridge. The capillary member, the dispensing unit, and the replaceable ink cartridge are mounted in the writing unit. The dispensing unit contacts the capillary member and has at least one cutting portion. The replaceable ink cartridge accommodates ink therein and has a film at one end thereof. The replaceable ink cartridge can be installed in the dispensing unit and the film can be pierced and cut by the at least one cutting portion. The ink flows through the film and is delivered to the writing unit via the capillary member and the dispensing unit for writing. The writing tool can thus dispense the ink fluently and leave no residual ink.

A pen structure containing liquid ink is disclosed herein. It comprises a tube body having a reservoir and an open end; a liquid outflow bushing disposed at the open end and accommodated in the reservoir of the tube body at one end thereof, wherein the liquid outflow bushing has a liquid delivering space and a screw groove disposed on a wall of the liquid delivering space and connected to an end face of the liquid delivering space at one end thereof; and a brush disposed in the liquid delivering space of the liquid outflow bushing and surrounded by the screw groove at one end thereof.

An aqueous writing, marking and/or drawing liquid is configured for capillary systems, more particularly for applicator implements having a capillary system. The liquid has a viscosity of less than 50 mPas, more particularly less than 20 mPas (Brookfield, 20 C., cone-plate CPE-40). The liquid contains a wetting agent, graphite having a carbon content of between 95 and 99.9 wt %, an ash content of between 0.1 and 5 wt %, and a particle size 20 m at D90, and at least one release agent, more particularly in a concentration of 2 to 15 wt %. The release agent contains barium sulfate and/or an aqueous, highly mobile, nonsedimenting colloidal dispersion of nanoparticulate silicon dioxide particles.

A writing instrument having a body and a writing tip that is mounted on the body. The body and the writing tip extend along an axial direction, and the writing tip presents a distal end portion having a cross-section that is U-shaped.

A writing tool has a pen tube, a capillary unit, and a dispensing unit. The capillary unit is mounted in the pen tube, and is connected to a nib. The dispensing unit is mounted in the pen tube, and has a communicating tube and a pressing segment connected to the communicating tube. The pressing segment has at least one connecting arm connected to the communicating tube. A dispensing interval is formed between the communicating tube and a periphery of the pressing segment. The communicating tube contacts the capillary unit to make the capillary unit form different compression densities via the pressing segment and the dispensing interval, thus facilitating dispensing ink downward easily through the dispensing interval and providing a better occlusion effect to further avoid ink leakage.

A discharge head for a liquid dispenser for discharging cosmetic products which has a base to be secured to a liquid storage. The base has a coupling device in the form of a thread or a latching coupling device, for coupling to the liquid storage. The discharge head has a sponge carrier with a sponge receptacle in which a sponge is arranged. The sponge carrier is movable in a translationally guided manner with respect to the base and has a hollow connector inside which a liquid channel is provided that connects the liquid storage to the sponge receptacle. This liquid channel is provided with an outlet valve, which is opened by moving the sponge carrier in the direction of the base, such that liquid can flow freely out of the liquid storage into the sponge receptacle.

The present disclosure relates to a writing instrument comprising a tubular body, a reservoir for an ink composition. The writing instrument comprises a nib comprising a switchable flow material, wherein the switchable flow material is configured to switch between a fluid flow preventing condition and a fluid flow enabling condition by a stimulus. The switchable flow material is configured to control flow of the ink composition from the reservoir to or towards a writing surface.