Resin composition for zipper, zipper, slide unit and lock

Abstract

The present invention relates to a resin composition for slide fastener, and a higher aliphatic acid salt-based compound, and to a slider, an element, and a slide fastener made from the resin composition. This resin composition for the slide fastener contains the following (A) component and at least one of grops from (B) to (E), wherein, (A) a polyester resin having 80% by mole of a repeating unit of alkylene terephthalate, and at least one component selected from group consisting of (B) a polymer having an average dispersion particle diameter in the range of 0.01 to 3 micron when dispersed and a glass transition temperature of 0 DEG C or less, (C) at least one inorganic compound selected from the group consisting of a titanium compound, a zinc compound and a silicon compound, (D) a fibrous reinforcing material, and (E) at least one releasing agent selected from the group consisting of a silicon-based compound, a higher aliphatic acid ester-based compound.

Description

technical field [0001] The present invention relates to a resin composition used in molding zippers, and more specifically, to a resin composition used in molding zippers that can be attached to clothing, bags, etc., and can be used even when subjected to repeated washing, heat drying, and heat from an iron resin composition. In addition, the present invention relates to a slider constituting a zipper, a lock, and a method of manufacturing them. Background technique [0002] Generally, such as figure 1 As shown, the zipper is composed of the following parts: lock 1 (also called teeth), zipper tape 2, slider (switch parts: composed of slider body 3 and handle 4), lower stop (also called bottom stop ), and, as required, an upper stop (also known as top stop). The strap is closed by moving the slider to engage the lock, or open by disengaging the lock. [0003] Conventionally, metals having high strength, polyoxymethylene having good formability and wear resistance, and the...

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Problems solved by technology

[0004] In addition, polybutylene terephthalate was used for locks and sliders in some parts, but at this time, the dyeability of the cloth and the belt is very different, and the color tone cannot be matched, so before molding , for coloring based on pigments, or after forming, it must be dyed separately from the cloth, so it cannot be generalized

In addition, in locks and sliders made of non-reinforced polybutylene terephthalate resin, the flexural modulus is about 2.3GPa, and the rigidity is low, and there is a problem of deformation during opening and closing.

In addition, in the lock and slider made of reinforced polybutylene terephthalate resin, especially when the content of the fibrous reinforcing material is 20% by weight or more, bending and deformation become large, due to the limitation of dimensional accuracy. relationship, the switch resistance is large or part of the gap, wear is large, and the use is limited to a very small range

Although, try to reduce the switching resistance with friction modifier, but the improvement is not enough

I tried to use polyethylene terephthalate, but it is difficult to form it with a complex metal mold in the usual composition, and it is impossible to produce

In addition, when zipper parts with high dimensional accuracy are required, there are problems with the switch during use due to the deformation of the product that has been released from the mold.

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