JPS6099028A - Speckle dyed polyolefin expanded stretched open fiber yarn and its production - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a polyolefin foamed stretched spread yarn with mottled dyeing,
and its manufacturing method.

Polyolefin-based synthetic resins such as high-density polyethylene and polypropylene cannot be dyed using normal dyeing methods, except when 11 color pigments are kneaded into the synthetic resin thickness J1 and heated and melted to produce 71 Qi colors. Therefore, it is considered to be an unsuitable material for use as a fiber material, which requires flexible dyeability. However, at the time of its invention, this type of synthetic resin, especially polypropylene, was highly regarded as an IM fiber material that was durable, light, and one of the best for cutting ice. It has excellent properties, and if dyeing can be solved technically, it would be very attractive as a #1 textile material.

The present invention enables dyeing of non-polar polyolefin synthetic resins, which was considered impossible with conventional chemical dyeing methods.
The aim is to provide a UI fiber material with completely new characteristics that have not been seen before, and the dye is fixed by applying physical means to the spread yarn made from a non-polar synthetic resin as a raw material. or reveal a surface condition that is easy to deposit,
By attaching or depositing the dyed nail on the surface of the yarn that is easily settled or hardened with a coating resin, we attempted to create a non-polar synthetic resin yarn with a patch dyed pattern. It is something to do.

Next, to explain in detail the method for manufacturing the mottled dyed polyolefin foam spread yarn according to the present invention, a foaming agent and fine powder of an inorganic agent such as calcium carbonate, talc, or sodium silicate are mixed into the polyolefin resin raw material, It is heated and melted and extruded using an extruder, and then cooled and solidified to form an unstretched film material. This raw film contains countless fine bubbles due to foaming, and has fine powder of an inorganic agent dispersed therein, making it non-uniform both in structure and composition.

Next, the raw film is slit into a fine 1j, heated and stretched in the longitudinal direction, and then the raw film is finely opened by a splitting blade that rotates at high speed, and the film base,
The closed cells, the inorganic r'(agent), and the cavities caused by the cell formation phenomenon on the negative side of the machine are mechanically split into 411 fine pieces to expand the surface area and make the surface rough with fine 4+1 unevenness, and 1j; 471. A polyolefin-based foamed, drawn and spread fiber yarn in which 1 is partially removed from the 'Ijjj' pole of the resin.

Next, this inorganic negative-side mixed polyolefin-based foamed stretched and spread yarn was immersed in a 714 mixture of dye and coating resin.
Due to the anchoring effect, the cells 9:-+1lI11 are generated around the voids generated by the opening process, that is, the split portions of minute closed cells, the II+ pores of the inorganic agent, and the inorganic agent. Fix or deposit dyes.

Finally, the post-dyed fibers are dehydrated and dried to obtain a polyolefin foamed stretched spread yarn having a mottled pattern.

Any dye can be used as the dye 1 of the polyolefin foam spread yarn according to the present invention, but as a result of experiments,
Metal complex dyes have the best dyeing properties. Furthermore, any synthetic resin can be used as the coating resin, but the characteristics of polyolefin resin as a fiber, namely 1.
Polyamide resin, vinyl acetate resin, etc. The best solution is a resin prepared by dissolving a resin such as in a mixed solvent such as alcohol or toluene.

Next, an example will be shown in which the mottled polyolefin foamed stretched spread yarn according to the present invention was actually dyed.

(Example) A mixed solution of the dyes listed in Table 1, 1-ting resin, and their solvents was heated to 50°C, and 11 L of the inorganic agent produced as described above was added to the mixed solution of polypropylene. Dyeing was carried out by dipping the expanded drawn and spread yarn.

The expanded stretched polypropylene yarn dyed as shown in Table 1 was able to be dyed in a bright brown spotted pattern.

In addition, this inorganic-mixed polypropylene 9: foam drawn spread yarn has dye firmly deposited on the surface of the yarn, does not peel off even when subjected to friction, and has sufficient resistance against sweat and water. It was found that the product had sufficient quality as a commercial product.

As mentioned above, the expanded stretched and spread yarn of polyolefin resin according to the present invention is produced by finely processing a raw film containing numerous fine closed cells, fine inorganic powder, and cavities caused by the cell formation phenomenon of an inorganic agent. By opening the fibers, the polarity of the non-polar polyolefin synthetic resin is partially released, and the foaming agent mixed in the film base and the film material is used to create air bubbles, inorganic agents, and S buying agents. By splitting the cavities accompanying the film, expanding the surface area of the original film, and making the surface rough, we created a surface condition that physically makes it easier for dyes to stick or deposit. It is now possible to post-dye non-polar polyolefin resins, which were considered impossible to dye. In addition, the expanded stretched spread yarn produced as described above was dyed by immersing it in a mixture of dye, coating resin, and solvent, so that the coating resin adhered to the surface of the fibers so as to envelop the dye. Therefore, the yarn dyed with μ is P? ! &
(It has the advantage that it does not fall off even when subjected to the action of force, water, juice, etc., and therefore it can provide a fiber useful as a material for general clothing or a material for carpets, etc.

Representative Patent Attorney Takeshi 1) Kenichi

Claims (1)

[Claims] 1. A non-polar thermoplastic synthetic resin film containing countless fine closed cells and a finely powdered inorganic agent is subjected to stretching and opening to form the closed cells and the inorganic agent. ■λ, which is characterized by having a dye mixed with a coating resin fixed or deposited on the surface of a foamed drawn spread yarn split from
F-dyed polyolefin foam drawn spread yarn. 2 A foaming agent and a structural agent are mixed into a polyolefin-based non-polar thermoplastic synthetic resin such as high-density polyethylene or polypropylene, heated and melted in an extruder, and then extruded into a film to produce a filter material, The raw film is subjected to stretching and opening 1- to produce a polyolefin foamed stretched and spread fiber yarn in which the numerous closed cells generated by the foaming agent and the cavities generated by the cell formation of the inorganic agent and the inorganic agent are split. , the above-mentioned inorganic side-mixed polyolefin foamed stretched and spread yarn is inseminated with J-containing solution of dye and coating resin, and finally, the liquid is removed and dried to obtain a polyolefin-based foamed stretched and spread yarn with a one-ply dyed collar pattern. A method for mottled dyeing a polyolefin foam drawn spread yarn, characterized by: