Outer coating layer for plastic pencil and preparation method thereof
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A wrapping and plastic technology, applied in non-mechanical pencils, printing, writing utensils, etc., can solve the problems of the wrapping layer being too hard and easily damaged, and achieve the effect of improving the smell of plastic, prolonging the service life and improving the elasticity.
Inactive Publication Date: 2018-12-11
安徽得亿文教用品有限公司
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[0004] The object of the present invention is to provide an outer wrapping layer of a plastic pencil and a preparation method thereof, by using polyethylene and modified bentonite as the main materials, adding auxiliary agents to make a wrapping film, and wrapping the wrapping film on the outside of the pen holder, Solves problems with existing plastic pencil wraps that are too rigid or prone to breakage
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Embodiment 1
[0026] An outer wrapping layer of a plastic pencil comprises the following components in parts by weight: 70 parts of polyethylene, 12 parts of SBS, 3.5 parts of coupling agent, 30 parts of modified bentonite, 2 parts of antioxidant, 2 parts of antiozonant, 4 parts of color masterbatch, 4 parts of deodorant, 3 parts of crosslinking agent, 8 parts of mineral oil, 10 parts of titanium dioxide, 5 parts of zinc oxide and 10 parts of fatty acid.
[0027] Among them, the modified bentonite is made of the following raw materials in parts by weight: 90-100 parts of bentonite, 10-15 parts of hydrophobic fumed silica, 5-8 parts of starch, and 20-30 parts of water. The preparation method is: first Add starch to water to make starch slurry, then add clay and hydrophobic fumed silica, grind for 10-15 minutes, then microwave for 5-10 minutes at a microwave frequency of 2450MHz and a power of 600W, and finally concentrate and dry it and crush it into powder. .
[0028] Wherein, the deodoran...
Embodiment 2
[0040] An outer wrapping layer of a plastic pencil, comprising the following components in parts by weight: 60 parts of polyethylene, 10 parts of SBS, 5 parts of coupling agent, 20 parts of modified bentonite, 3 parts of antioxidant, 3 parts of antiozonant, color 3 parts of mother, 4 parts of deodorant, 2 parts of crosslinking agent, 5 parts of mineral oil, 12 parts of titanium dioxide, 3 parts of zinc oxide and 15 parts of fatty acid.
[0041] The preparation method is the same as in Example 1.
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Abstract
The invention discloses an outer coating layer for a plastic pencil and a preparation method thereof, and relates to the technical field of pencil preparation. The outer coating layer is prepared fromthe following components in parts by weight: 60-80 parts of polyethylene, 10-15 parts of SBS, 2-5 parts of coupler, 20-60 parts of modified modified bentonite, 1-3 parts of an antiaging agent, 1-3 parts of antioxidant, 2-5 parts of color masterbatch, 2-5 parts of an odor removing agent, 2-5 parts of a crosslinking agent, 2-10 parts of mineral oil, 5-15 parts of titanium dioxide, 3-7 parts of zincoxide and 5-15 parts of fatty acid. According to the outer coating layer, the polyethylene and modified bentonite are used as main materials, and are added with additives to prepare a coating film, which coats the outer part of a pen-holder, and the problem that an existing plastic pencil coating layer is over hard or easily broken can be solved.
Description
technical field [0001] The invention belongs to the technical field of pencil preparation, in particular to an outer wrapping layer of a plastic pencil and a method for preparing the outer wrapping layer of a plastic pencil. Background technique [0002] Pencils are indispensable school supplies in people's daily life, whether they are students or office workers. Although pencils are not as popular as water pens, they are still extremely needed for professional drawing professionals. Today, there are many types of pencils, such as the ones with the best color, the darkest ones, the thick ones and the thinner ones. [0003] Most of the existing plastic pencils are composed of a pen core, a pen holder and a wrapping layer wrapped around the outside of the penholder. The existence of the wrapping layer makes the use of the pencil more comfortable, etc., but the wrapping layer of the existing pencils mostly uses paper or commonly used plastic films; Traditional paper or plasti...
Claims
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Application Information
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