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1. 发明公开

US20240209230A1 NON-BAKED PENCIL LEAD AND METHOD FOR MANUFACTURING NON-BAKED PENCIL LEAD 审中-公开
公开(公告)号：US20240209230A1
公开(公告)日：2024-06-27
申请号：US18565183
申请日：2022-03-30
申请人： MITSUBISHI PENCIL COMPANY, LIMITED
发明人： Tatsuya MURATA
IPC分类号： C09D13/00 , B43K19/18
CPC分类号： C09D13/00 , B43K19/18
摘要： A non-baked pencil lead containing a water-soluble polymer, a crosslinking agent, and a powder, in which the water-soluble polymer is selected from a group consisting of a carboxymethyl cellulose salt, starch, polyvinyl alcohol, and xanthan gum, and the crosslinking agent is selected from a group consisting of an acid, polyamide epoxy, polyacrylamide, titanium alkoxide, and glyoxal.

2. 发明公开

US20230373236A1 IMPROVED COLORING PENCIL LEAD FOR SYNTHETIC PENCIL BASED ON BIOPOLYMERS BLENDS 审中-公开
公开(公告)号：US20230373236A1
公开(公告)日：2023-11-23
申请号：US18247207
申请日：2021-09-24
申请人： SOCIÉTÉ BIC
发明人： Julien GOUEREC
IPC分类号： B43K19/18 , B43K19/02 , C09D13/00 , C08L67/04
CPC分类号： B43K19/18 , B43K19/02 , C09D13/00 , C08L67/04
摘要： The present invention relates to a polymer-based extendable lead or refill for writing, drawing and/or painting tools comprising a binder comprising a mixture of polylactide with at least one polymer having a flexural modulus inferior to the flexural modulus of polylactide and at least one filler. It also relates to writing, drawing and/or painting tool, advantageously a pencil, comprising lead or a refill according to the invention and to the use of a binder comprising a mixture of polylactide with at least one polymer having a flexural modulus inferior to the flexural modulus of polylactide according to the invention to improve the vividness of polymer-based extrudable lead or refill for writing, drawing and/or painting tools.

3. 发明授权

US11179962B2 Pencil lead 有权
公开(公告)号：US11179962B2
公开(公告)日：2021-11-23
申请号：US16319945
申请日：2017-06-12
申请人： MITSUBISHI PENCIL COMPANY, LIMITED
发明人： Hiroyuki Arai , Satoru Banzai
IPC分类号： B43K23/00 , B43K19/14 , B43K19/02 , B43K19/18 , C09D13/00 , C08K3/04 , C08K5/092 , C08K5/098 , C08K13/02 , C08K3/38
摘要： In a pencil lead manufactured through a baking step regardless of being a black lead or a colored lead, the mechanical strength of the pencil lead is further increased by coating a surface thereof with a resin. A pencil lead includes a baked lead body whose surface is covered by a covering layer made of resin that has a scratch hardness of HB or greater. The scratch hardness of the resin as a subject resin is defined as a lowest hardness index of a tester pencil that is able to form an indentation on a surface of a horizontal flat plate coated with a 5-μm thick film of the subject resin, when the surface is scratched by the tester pencil being pressed onto the surface at an angle of 45° with a load of 7.355 N.

4. 发明授权

US11072722B2 Pencil lead 有权
公开(公告)号：US11072722B2
公开(公告)日：2021-07-27
申请号：US16604220
申请日：2018-04-09
申请人： SOCIETE BIC
发明人： Julien Gouerec , Frédéric Claptien , Philippe Lefebvre , Christelle Debrauwer
IPC分类号： C09D13/00 , B43K19/02 , B43K29/02 , B43K19/18 , C08K3/04 , C08K7/22
摘要： A pencil lead and a pencil containing the pencil lead wherein the pencil lead is polymer-based, extrudable, non-expanded, non-calcined and comprises graphite, of which 25% to 100% by weight or 50% to 100% by weight of the graphite, in relation to the total weight of the graphite, is expanded graphite.

5. 发明授权

US09988546B2 Colour pencil lead 有权
公开(公告)号：US09988546B2
公开(公告)日：2018-06-05
申请号：US15537021
申请日：2015-12-14
申请人： CONTE
发明人： Frédéric D. Claptien , Julien Gouerec , Philippe Lefebvre
IPC分类号： C09D13/00 , B43K19/02 , B43K19/18
CPC分类号： C09D13/00 , B43K19/02 , B43K19/18
摘要： The present invention concerns an extrudable, unexpanded color pencil lead, comprising, by weight relative to the total weight of the lead: between 25 and 45%, and advantageously between 30 and 40%, of a polyolefin; between 25 and 50%, and advantageously between 30 and 40%, of a colorless mineral filler; between 4 and 20%, and advantageously between 5 and 15%, of a pigment coated with or mixed with a polyolefin wax; between 0 and 10%, and advantageously between 2 and 10%, of an additive, and between 10 and 30%, and advantageously between 15 and 25%, of stearate chosen from magnesium stearate, calcium stearate and the mixture of same. It further concerns the color pencil comprising a lead according to the invention.

6. 发明申请

US20170349775A1 COLOUR PENCIL LEAD 有权
公开(公告)号：US20170349775A1
公开(公告)日：2017-12-07
申请号：US15537021
申请日：2015-12-14
申请人： CONTE
发明人： Frédéric D. CLAPTIEN , Julien GOUEREC , Philippe LEFEBVRE
IPC分类号： C09D13/00 , B43K19/18 , B43K19/02
CPC分类号： C09D13/00 , B43K19/02 , B43K19/18
摘要： The present invention concerns an extrudable, unexpanded colour pencil lead, comprising, by weight relative to the total weight of the lead: between 25 and 45%, and advantageously between 30 and 40%, of a polyolefin; between 25 and 50%, and advantageously between 30 and 40%, of a colourless mineral filler; between 4 and 20%, and advantageously between 5 and 15%, of a pigment coated with or mixed with a polyolefin wax; between 0 and 10%, and advantageously between 2 and 10%, of an additive, and between 10 and 30%, and advantageously between 15 and 25%, of stearate chosen from magnesium stearate, calcium stearate and the mixture of same. It further concerns the colour pencil comprising a lead according to the invention.

7. 发明申请

US20160362574A1 Color Pencil Lead 有权
标题翻译：彩色铅笔铅
公开(公告)号：US20160362574A1
公开(公告)日：2016-12-15
申请号：US15119018
申请日：2015-02-20
申请人： MITSUBISHI PENCIL COMPANY, LIMITED
发明人： Satoru BANZAI
IPC分类号： C09D13/00 , B43K19/18 , C09D161/06 , C09D129/14 , C09D101/02 , B43K19/02 , B43K21/00
CPC分类号： C09D13/00 , B43K19/02 , B43K19/18 , B43K21/003 , C08K3/34 , C08K5/0041 , C08K7/24 , C09D101/02 , C09D129/14 , C09D161/06
摘要： Provided is a color pencil lead which is excellent in a hue, a light resistance and a strength and can be erased with an eraser and which is suited to pencil leads for mechanical pencils and wooden pattern holder pencils. The above color pencil lead is characterized by containing a resin in which a dye is dissolved or included in a pencil lead body.
摘要翻译：提供了一种彩色铅笔铅，其色调，耐光性和强度优异，并且可以用橡皮擦擦除，并且适合于用于机械铅笔和木制图案保持器铅笔的铅笔线。上述彩色铅笔铅的特征在于含有染料溶解或包含在铅笔铅体中的树脂。

8. 发明授权

US5733482A Baked color pencil lead manufactured by impregnation with perhydropolysilazane and heat treatment 失效
标题翻译：通过用全氢聚硅氮烷浸渍制造的烘烤的彩色铅笔铅和热处理
公开(公告)号：US5733482A
公开(公告)日：1998-03-31
申请号：US504930
申请日：1995-07-20
申请人： Masaaki Hoshiba
发明人： Masaaki Hoshiba
IPC分类号： B43K19/18 , C09D13/00 , C01B31/00
CPC分类号： B43K19/18 , C09D13/00
摘要： By kneading a composition containing a filler and an organic forming binder, extruding the composition, baking the composition in a non-oxidizing atmosphere, there is obtained a first baked lead containing, as a binder, a carbon obtained by the carbonization of the organic forming binder. Then, by heating the first baked lead in an oxidizing atmosphere to remove the binder carbon, there is formed a second baked lead composed of at least the filler. The pores of the second baked lead are impregnated with a solution containing perhydropolysilazane, subjecting the lead to a heat treatment in an inert atmosphere or an ammonia gas atmosphere to form a third baked lead containing the resultant silicon nitride. Finally, ink is filled into the pores of the third baked lead to provide a baked color pencil lead.
摘要翻译：通过捏合含有填料和有机成形粘合剂的组合物，挤出组合物，在非氧化性气氛中焙烧组合物，得到含有作为粘合剂的第一焙烧铅，其通过有机成形粘合剂然后，通过在氧化气氛中加热第一烘烤铅以除去粘合剂碳，形成由至少填料构成的第二烘烤铅。用含有全氢聚硅氮烷的溶液浸渍第二烘烤铅的孔，在惰性气氛或氨气气氛中对铅进行热处理，形成含有所得氮化硅的第三烘烤铅。最后，将墨水填充到第三烘焙引线的孔中，以提供烘烤的彩色铅笔铅。

9. 发明授权

US5534206A Method for preparing baked pencil leads using concentric straightening plates 失效
标题翻译：使用同心矫直板制作烤铅笔线的方法
公开(公告)号：US5534206A
公开(公告)日：1996-07-09
申请号：US385967
申请日：1995-02-09
申请人： Hideo Odashima
发明人： Hideo Odashima
IPC分类号： B43K19/18 , C09D13/00 , B29C47/70
CPC分类号： B43K19/18 , C09D13/00 , Y10T428/292 , Y10T428/2982
摘要： Baked pencil leads in which a filler such as flaky graphite is oriented in a concentric tubular form in an outer peripheral portion of each lead and which has one or more layers spaced in a radial direction from the outer peripheral portion and comprising the filler oriented in the concentric tubular form between the central portion and the outer peripheral portion of each lead and in which the filler is at random or radially oriented in the other portions of each lead. The baked pencil leads can be obtained by the use of a plurality of concentric conical tubular straightening plates having the sectional area of a flow path continuously decreased toward a nozzle orifice, in extruding a kneaded material mainly comprising the filler and a binder. In the baked pencil leads, strength can be remarkably improved without lowering density, and thus these baked pencil leads are excellent in the balance between the strength and the density.
摘要翻译：烘烤铅笔线，其中诸如片状石墨的填充物以同心管状形式定向在每个引线的外周部分中，并且具有沿着径向方向与外周部分间隔开的一层或多层，并且包括在在每个引线的中心部分和外周边部分之间是同心圆筒状的，并且其中填料在每个引线的其它部分中是随机的或径向取向的。烘烤的铅笔线可以通过使用多个同心圆锥形管状矫直板获得，该多个同心圆锥形管状矫直板在挤出主要包括填料和粘合剂的捏合材料时，具有朝向喷嘴孔连续减小的流路的截面面积。在烘烤铅笔中，强度可以显着提高而不降低密度，因此这些烘烤铅笔线在强度和密度之间的平衡方面是优异的。

10. 发明授权

US5430075A Baked pencil leads and method for preparing same 失效
标题翻译：烤铅笔线及其制备方法
公开(公告)号：US5430075A
公开(公告)日：1995-07-04
申请号：US118030
申请日：1993-09-08
申请人： Hideo Odashima
发明人： Hideo Odashima
IPC分类号： B43K19/18 , C09D13/00
CPC分类号： B43K19/18 , C09D13/00 , Y10T428/292 , Y10T428/2982
摘要： Baked pencil leads in which a filler such as flaky graphite is oriented in a concentric tubular form in an outer peripheral portion of each lead and which has one or more layers spaced in a radial direction from the outer peripheral portion and comprising the filler oriented in the concentric tubular form between the central portion and the outer peripheral portion of each lead and in which the filler is at random or radially oriented in the other portions of each lead.The baked pencil leads can be obtained by the use of a plurality of concentric conical tubular straightening plates having the sectional area of a flow path continuously decreased toward a nozzle orifice, in extruding a kneaded material mainly comprising the filler and a binder.In the baked pencil leads, strength can be remarkably improved without lowering density, and thus these baked pencil leads are excellent in the balance between the strength and the density.
摘要翻译：烘烤铅笔线，其中诸如片状石墨的填充物以同心管状形式定向在每个引线的外周部分中，并且具有沿着径向方向与外周部分间隔开的一层或多层，并且包括在在每个引线的中心部分和外周边部分之间是同心圆筒状的，并且其中填料在每个引线的其它部分中是随机的或径向取向的。烘烤的铅笔线可以通过使用多个同心圆锥形管状矫直板获得，该多个同心圆锥形管状矫直板在挤出主要包括填料和粘合剂的捏合材料时，具有朝向喷嘴孔连续减小的流路的截面面积。在烘烤铅笔中，强度可以显着提高而不降低密度，因此这些烘烤铅笔线在强度和密度之间的平衡方面是优异的。

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