History of liquid glues

Polyvinyl alcohol, a synthetic resin that has been industrialized since the war, has been used. It became the market in 1975, and it has reached the present. There was no liquid glues before that, an...

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Japan glues History

It is said that the paper has been introduced to our country in 610 years (18 years old), and the clip of paper has begun to spread to the private sector since the Heian period, and it is estimated fr...

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Types of Plastic Eraser

There are two types of Plastic Eraser , the so-called rubber-shaped eraser made of natural rubber, and the plastic erase. Because some things are not rubber, it is called "erase" accurately. The rubbe...

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Origin of the name of various glues

There is a historical one, and it is named from the raw material, the form, the function, and the application. For example, from raw materials, such as starch glues , Arabiya rubber glues , poval glue...

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Is the non-dust Plastic Eraser not erased?

It is often thought that it eraser dust is an eraser that is not Plastic Eraser erased from the name of non-dust, but in fact it does not mean that the eraser dust does not come out. Because the erase...

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Bonding duration

Solid glues , liquid glues Bonding is permanent, but paper may deteriorate. glue tapes Acrylic acid ester resins, which are the ingredients of glues , are very stable. It does not deteriorate like ...

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How to use other than erase

Basically, I can use it in various ways to "clean" things. For example, it may be used to remove dirt from a small leather product or building material, or to polish the metal, and the sand is very ef...

https://www.tombow.com/en/mamechishiki/e74/

What is acid-free?

Acid is acids that do not contain acidic components. However, in a Tombow Pencil , the meaning of acid-free is not "acids or alkalis, nor does it tarnish paper or letters!" 」 The "Acid-free mark" is...

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Why is glue glued?

Since the solid glues is originally a gel product with 50% or more liquid content, it can be liquefied locally by the physical force at the time of coating and wet the paper. In this way, it is said t...

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Why the glues ?

glues is bonded to paper by chemical action and mechanical action, and glues itself becomes a hardened and sturdy film, and paper and paper are combined. The chemical action is the hydroxyl group (-OH...

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Can you erase the character of a ballpoint pen ?

These days I often see an Plastic Eraser that can erase the ink of a ballpoint pen like a pencil. This is how it is erased on earth, and the ink of the ballpoint pen is scraped off the paper. Therefor...

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Type of glues

It also means the starch glue made from the glues starch of rice and corn, and the adhesive of the industrial material widely. In a narrow sense, the adhesive for the paper of the use for clerical wor...

https://www.tombow.com/en/mamechishiki/g69/

How to erase characters with Plastic Eraser

It is a state written in the paper of "character" and "picture" that the powder of the pencil made of graphite enters the eyes of the paper. The powder is immediately peeled off from the paper when pu...

https://www.tombow.com/en/mamechishiki/e68/

History of Mechanical Pencil

It is said that the key run of the United States was announced by the name of "Eversharp" almost 100 years ago. The first domestically produced by Hayakawa Metal (current Sharp Co., Ltd.) was release...

https://www.tombow.com/en/mamechishiki/s67/

Types of mechanical Pencils

There are two types of mechanical pencils, which are called " knock mechanism " and "Feeding type". The knock mechanism includes a side knock mechanism type and an automatic knock mechanism type....

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English name of mechanical pencil

The mechanical pencil is named after Tokuji Hayakawa, the founder of Sharp Corporation, and is called Mechanical Pencils in English. In the Japan, it is nicknamed such as a mechanical pencil, and is e...

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Why does the knock sound ?

In short, the ring in the inside is flipped, and the sound which knocks against the back wall becomes it. Therefore, the tick sound does not relate to a basic performance. The metal chuck sounds bette...

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Length and thickness of the Spare Leads

The thickness of the core is determined by JIS. The recommended value is also shown for the length. There seems to be a lot of 60mm length....

https://www.tombow.com/en/mamechishiki/s63/

Spare Leads Eco

The eco Mark and the green purchasing method are prescribed for the container containing the core, and the recycled material (recycled plastic or recycled paper) is used. In the Tombow , recycled plas...

https://www.tombow.com/en/mamechishiki/s62/

0.3 mm thicker than the Spare Leads ?

The "core" and "diameter" are defined by JIS standards. The 0.3 mm core will be exactly 0.38 mm on average and will be close to 0.4 mm thick. Each manufacturer is manufactured in accordance with this ...

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About the concentration of the Spare Leads and the Pencil

In JIS, both the Spare Leads and the pencil core were originally the same standard. However, in order to be consistent with international standard ISO, we have established JIS standards separately. Si...

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Type of core

In the market, there are 12 types of core diameters: 0.2, 0.3, 0.4, 0.5, 0.7, 0.9 mm, and the intensity is 4B to 6H (4B, 3B, 2B, B,HB, F, H, 2H, 3H, 4H, 5H, 6H). Tombow has a core diameter of 0.3mm, 0...

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About the color Spare Leads

There are two kinds of color Spare Leads . The same as colored pencils, a non-calcined core made by extrusion molding of pigments, waxes and resins, and boron, talc, mica, and clay minerals are formed...

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Performance required for Spare Leads

1. Be able to write thick The grain of the core is fine, and it adheres to the fiber of the paper snugly, and settles. 2. Strong There is no core break during writing. 3. Smooth There is no catch...

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How to make a Spare Leads

The Spare Leads is made through the process of mixing → kneading → extrusion molding → firing → immersion oil → cutting → packaging. It is kneaded by a roll to increase the affinity of the graphite an...

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Raw material for Spare Leads

The first was the sintering of the clay, which is the main raw material, the graphite and the binder, as well as the pencil core. However, it was not possible to obtain enough strength when the core d...

https://www.tombow.com/en/mamechishiki/s55/

History of Spare Leads

Since the release of the Eversharp in 1838, the Spare Leads was made of graphite clay (same as pencil core), with a core diameter of 1.0 and 1.5 mm length of about 30mm. However, in 1962, a 0.5 mm syn...

https://www.tombow.com/en/mamechishiki/s54/

Water-based inks are weak

In the Tombow Pencil , the pigment is used for the water-based ink. It may be blurring immediately after writing, but there is no worry blurring even if it is dry and wet....

https://www.tombow.com/en/mamechishiki/m53/

The Difference between water-based ink and oil-based ink

Products using water as the main solvent are water-based inks, and those using organic solvents are oil-based inks. Apparently, the water-based ink is shabby and the oil-based ink is like thick syrup....

https://www.tombow.com/en/mamechishiki/m52/

Ink Life

■ Oily ink In JIS, it is possible to write out well even after 15 months from the date of manufacture. The product of the Tombow is guaranteed 24 months. Because there is a lot sign in the wick, it b...

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Ink raw Materials

■ Oily ink Dye + solvent + resin is a basic configuration. This is almost the same as the composition of the marker, but the viscosity is different (viscosity of starch syrup and honey position). ■ ...

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History of neutral ballpoint pen

The newest is this neutral ballpoint pen pen (Gel ink ballpoint pen ). It has been released from domestic manufacturers around 1984. As a new generation of ballpoint pen using the word neutral ink, ne...

https://www.tombow.com/en/mamechishiki/b49/