91results about "Pencil leads" patented technology

The invention relates to a colour lead, graphite lead, colour chalk or graphite chalk for drawing and / or sketching, having a lead base comprising a wax, at least one filler and at least one colouring agent, wherein the lead base further comprises aluminium distearate and as a wax at least one functionalised metallocene polyolefin wax and at least one hardening wax.

Provided is a solid writing implement containing: a leuco-dye, a long-chain fatty acid ester, and a solvent capable of dissolving or dispersing the leuco-dye.

A lead is proposed for pencils for writing, drawing, decorating and / or cosmetic use that comprises binder, filler, colorant and other additives, constituents of the lead being as follows: 5 to 65 wt% of binder comprising polyhydroxybutyric acid and / or a copolymer with polyhydroxybutyric acid as first polymer and with a second polymer, 33 to 85 wt% of filler with colorant, 2 to 33 wt% of wax or waxes, 0 to 1 wt% of other additives such as stabilizers, lubricants.

A non-baked pencil lead comprising a filler, a pigment, a water-soluble resin, a crosslinking agent and a polycaprolactone.

This invention provides a non-fired pencil lead that offers sufficient writing strength even when the tip is sharpened, is less susceptible to deterioration due to moisture absorption, is erasable, and simultaneously achieves improved opacity and fixation of the written line—qualities not achievable with conventional methods. [Solution] A non-fired pencil lead characterized by containing a carboxymethylcellulose salt, a high-molecular-weight organic acid, and a powder.

To provide a fired pencil lead that offers a light and smooth writing feel, suppresses the spread of lead powder when rubbed, and produces a writing style that is less likely to smudge the paper. [Solution] A fired pencil lead is made in which a liquid that satisfies a specific relationship between the kinematic viscosity value at 40°C and the kinematic viscosity value at 100°C is impregnated into the pores of the fired core.

Paste compositions with a water content of no more than 2% by weight, containing and / or consisting of (a) at least one colour pigment and / or one filler, (b) at least one alkoxylated carboxylic acid and, if applicable (c) at least one dispersant.

Paste compositions with a water content of no more than 2% by weight, containing and / or consisting of (a) at least one colour pigment and / or one filler, (b) at least one poloxamer and, if appropriate, (c) at least one dispersant.

A non-baked pencil lead (10) including a wax that is solid at normal temperature, a colorant, a filler, a water-soluble resin, and a cellulose fiber, wherein a ratio of a flaky substance in the filler is 20 mass% or less, and the ratio of an aggregate particle in the filler is 80 mass% or more.

The invention belongs to the technical field of stationery, and provides parallel rainbow dust-free chalk and a processing method thereof. The chalk is formed by fixedly connecting at least two dust-free chalk units with different colors in parallel along the axial direction, and the cross section of a finished product is fan-shaped or distributed in parallel in a layered manner; each unit comprises 9-15 parts of a binder, 43-57 parts of a filler, 0.5-1.5 parts of a coloring agent, 4-6 parts of a moisture-proof lubricant and 25-35 parts of an emulsification dispersion medium. The processing method comprises the following steps: metering raw materials, preparing powder and a mixture in a color separation manner, pressing color strips in a color separation manner, combining the color strips in parallel, filling the color strips into a die, carrying out collaborative extrusion molding at 30-40 DEG C and 0.5-1.0 MPa, and carrying out post-treatment, wherein the mixture is rolled for not less than 2 times. Single-support multi-color writing is achieved, the color bar area is large if the color is small, use is convenient, multi-color lines with natural transition can be drawn at the same time if the color is large, and the drawing interest is improved; through the process of color separation pressing, combined die filling and collaborative extrusion, color unit interfaces are tightly attached, the structure is stable, the process is compatible with existing equipment, and industrial popularization is facilitated.

To provide fired pencil lead that can maintain writing line density while improving bending strength, and offers a smooth writing feel, and a method for producing the same.SOLUTION: Fired pencil lead is prepared by sintering a mixture containing a body material, an organic binder, organic modified silicone, and silica oxide nanoparticles.SELECTED DRAWING: None

The invention discloses a marking material for a fabric and a preparation method thereof, and relates to the technical field of marking materials, the marking material for the fabric comprises the following components by mass percentage: 62%-65% of grease, 8%-10% of sodium hydroxide, 19%-20% of water and 5%-10% of talcum powder. According to the marking material for the fabric, the marking position is clear, lasting and easy to clear, the identification definition and the clearability of the marking material are both considered, the processing precision and the production efficiency of products can be improved, and therefore the defective rate caused by unclear marking or residual marking of the products is reduced.

The present invention relates to a body for a writing, tracing, drawing or coloring pencil, the composition of which comprises, by weight, with respect to the total weight of the body: - a) between 50% and 95% of a mixture of polylactic acid and of polybutylene succinate in a polylactic acid / polybutylene succinate ratio by weight of between 90 / 10 and 60 / 40 and - b) between 5% and 50% of filler, wherein said filler comprises an organic filler, such as wood fibers. In addition, it relates to a writing, tracing, drawing or coloring pencil comprising this body.

A non-baked pencil lead including a wax that is solid at normal temperature, a colorant, a filler, a water-soluble resin, and a cellulose fiber, wherein a ratio of a flaky substance in the filler is 20 mass % or less, and the ratio of an aggregate particle in the filler is 80 mass % or more.

The present invention provides a pencil lead capable of achieving both bending strength and writing density even when graphite is used as the filler material, a method for manufacturing the same, and a pencil equipped with the pencil lead. [Solution] The pencil lead of the present invention has an apparent density (g / cm³). 3 The value obtained by dividing ) by the volume-average particle size (μm) is 0.040 (g / cm³). 3 It contains graphite particles that are spheroidal graphite or scaly graphite and are larger than or equal to ( / μm).

The purpose of the present invention is to provide a coloring composition that: makes it possible to obtain a glossy drawing or a beautiful drawing having little mottling; is excellent in drawing feel and long-term stability; and can contribute toward environmental conservation. This coloring composition contains a carbon-based powder as a pigment component, and is such that 70 mass% or more of the carbon-based powder is constituted by particles having a particle diameter in the range of 50-600 nm, e.g., 100-400 nm, according to a dynamic light scattering method. Preferably, 5 mass% or more of the carbon-based powder is constituted by particles having a particle diameter in the range of 400-600 nm. The carbon-based powder also preferably has a fixed carbon content of 40-98 mass%. Preferably, 70 mass% or more of the carbon-based powder is constituted by biomass carbon.

A system, composition, and method are disclosed for producing superhydrophobic and antifouling polymer materials. The invention incorporates antifouling agents such as capsaicin, medetomidine, tralopyril, or zinc pyrithione together with hydrophobic additives such as polydimethylsiloxane, polytetrafluoroethylene, fluoropolymers, or surface-modified nanoparticles into natural or synthetic rubber and thermoplastic matrices. In one approach, pre-formulated antifouling compositions are added as solid components during compounding, and in another, the polymer itself serves as a carrier medium for direct incorporation of the active ingredients. The compounded materials exhibit controlled release of antifouling agents, low surface energy, and superhydrophobic behavior that reduces drag and resists attachment of marine and freshwater organisms. A manufacturing system may include compounding, monitoring, and forming units, with optional plasma or laser treatment to enhance nanoscale roughness. The invention enables durable, environmentally responsible materials for marine, industrial, and consumer applications requiring long-term fouling resistance.

The invention relates to an erasable, unburnt colored lead for writing, drawing and painting devices or erasable, unburnt colored chalk containing at least one filler material, graphite, at least one colorant, at least one binding agent and at least one wax, wherein boron nitride is present as a filler material and at least on pigment is present as colorant. The invention further relates to a writing, painting or drawing device comprising an erasable, unburnt colored lead and a method for manufacturing such a colored lead or colored chalk.

This non-baked pencil lead comprises a carboxymethyl cellulose salt, a polymeric organic acid, and a powder.

The invention provides a non-calcined pencil lead, which can achieve high visibility and line performance of easy writing even on a tablet, and pencil writability / line characteristics at the same time. The non-calcined pencil lead according to the present disclosure contains at least a body material, a pigment, and a water-soluble resin, and is characterized in that the range of the intensity ratio (G / D) of the G peak (near 1580 cm <-1 >) to the D peak (near 1350 cm <-1 >) in the Raman spectrum of a writing line is set to 5-20%, and the range of the intensity ratio (G / D) of the writing line is set to 20% or more, the range of the intensity ratio (G / D) of the writing line is set to 0.5-1.5.

The invention belongs to the field of stationery, and particularly relates to a mould-proof and dirt-proof pen refill and a pencil. According to the mould-proof and dirt-proof pen refill provided by the invention, the formula and the melt extrusion process of the pen refill are optimized, and an environment-friendly material, namely the bio-based resin polylactic acid, is adopted as a raw material, so that a continuous film can be formed when the pen refill is used for writing on paper, and the pen refill can be cleaned and dirt can be prevented while being finally easily erased by an eraser. The invention provides a pencil comprising the refill, and the pencil can prevent mildew and dirty hands.

To provide a fired pencil lead that suppresses the spreading of lead powder when rubbed, resulting in a writing style that is less likely to smudge the paper. [Solution] A fired pencil lead is made in which a liquid with a viscosity index of 350 or less is impregnated into the pores of the fired core.

The plastic rod three-in-one crayon comprises a hollow plastic penholder, a sealing cap and a three-in-one crayon core, the three-in-one crayon core is arranged in the plastic penholder and adheres to the inner wall of the plastic penholder through an adhesive, the bottom of the sealing cap is inserted from the top of the plastic penholder, and the sealing cap is arranged on the plastic penholder. The sealing cap is fixed to the top of the plastic penholder in a close fit mode through the protruding annular groove, the bottom of the three-in-one crayon core is flush with the bottom of the plastic penholder, and the top of the three-in-one crayon core abuts against the bottom of the sealing cap. According to the three-in-one colored crayon pencil, the easily-sharpened resin material is adopted as a wrapping material of the three-in-one colored crayon pencil, the crayon is subjected to a casting molding process, and the crayon is a round or polygonal special-shaped solid rod body, so that the three-in-one colored crayon pencil is low-carbon, environment-friendly, simple in process, high in production efficiency and low in cost.

The low-viscosity and high-color-concentration crayon is characterized by comprising the following components: wax, hydrogenated rosin, toner and a viscosity reduction modifier. The viscosity reduction modifier is at least one of dimethyl methylphosphonate and diethyl ethylphosphonate. The invention further discloses a preparation method of the low-viscosity and high-color-concentration crayon. The crayon has good plasticity and processability, and various complex shapes can be manufactured in a pouring or injection molding mode. Hydrogenated rosin is adopted as a main component, and good compatibility and stability are achieved. The viscosity reduction modifier can reduce the viscosity of the crayon during melting, improve the flexibility, temperature resistance and flame retardance of the crayon and reduce the precipitation risk.

To provide an extra lead product which suppresses adhesion of a colored pencil lead to a case.SOLUTION: A colored pencil lead includes a colored pencil lead, and an extra lead case containing the same. The colored pencil lead contains a porous lead body containing an extender, an inorganic binder, a coloring agent, and an organic solvent capable of dissolving the coloring agent, and a hardly volatile liquid that cannot dissolve the coloring agent. In an inner surface of the extra lead case, a resin material having a solubility parameter different from the hardly volatile liquid by 1.5 or more is arranged.SELECTED DRAWING: Figure 1