Manufacturing process for environment-friendly polymer pen point of skin-core structure

Abstract

The invention relates to a manufacturing process for an environment-friendly polymer pen point of a skin-core structure. The manufacturing process comprises the step I of material selection: selectingpolyamide 6 as skin fibers and polyamide 66 as core fibers; the step II of compounding: bonding the skin fibers to the periphery of the core fibers with a composite spinning method, so that skin-corecomposite fibers are formed; the step III of strand combination; the step IV of fiber shaking: shaking single-stranded composite fibers at high frequency repeatedly, till the skin-core composite fibers are shaken to arrange uniformly; the step V of molding: heating the composite fibers through a thermal forming device at 220 DEG C-230 DEG C, so that the skin fibers are molten and the skin fibersof the skin-core composite fibers are bonded, and the fibers are formed into bars; the step VI of surface treatment; the step VII of cutting: cutting the bars into sections; and the step VIII of grinding. By adopting the above scheme, the invention provides the manufacturing process for the environment-friendly polymer pen point of the skin-core structure, and according to the manufacturing process, the pen point manufacturing is optimized; and the pen point has the advantages of good writing effect and labor saving in use.

Description

technical field [0001] The invention relates to the field of pen making, in particular to a manufacturing process for an environmentally friendly polymer pen head with a skin-core structure. Background technique [0002] A pen is a tool used for writing in daily life, and the nib, as the main part of the pen, is installed at the front end of the pen to collect ink so that the ink can be written on paper. The traditional nib will be heated and dipped in glue after the initial setting of the fiber filament, and then dried and cured for the second time. The viscosity of the glue is used to reinforce the fiber filament bundle to ensure that it does not deform during the writing process. However, this processing method has certain disadvantages. Because the organic solvent of the glue solution will volatilize when heated, it is easy to cause environmental pollution, and there are multiple heating steps in the processing process, which will consume a lot of energy and cause energy...

AI Technical Summary

Problems solved by technology

The material selected for this type of nib is a ready-made composite fiber tow with a sheath-core structure for packaging and textiles. Since it is not optimized for the use of the nib, it is easy to break the ink when writing. The reasons are mainly concentrated in the following aspects. ①Because it is used in the packaging and textile fields, in order to meet the high strength requirements, the skin-to-core thickness ratio is often high, generally 50 / 50~40 / 60, which leads to the fact that the core layer used to collect the ink transfer ink is too small due to the cross-sectional area hindered; ②The arrangement of skin-core composite fiber filaments in the same composite fiber bundle is relatively disordered, and the through-holes after forming are also disorderly arranged, resulting in poor ink flow and affecting the writing effect; ③Low water absorption, water diversion time Long; ④The choice of materials, the skin layer of the composite fiber of the skin-core structure is made of polyester material, and the core layer is made of acrylic or polyester, which has poor hydrophilicity and hard hardness, and is not suitable for writing

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