CN1282805A - Flat thread of monofilament polyester yarn for making zipper stop - Google Patents

Abstract

A flat thread of polyester monofilament is prepared from polyester, plasticizer and cross-linking agent in ratio of 7:2:1 through mixing, thermal fusion, pugging and making flat thread. It can be used to make zipper stop by ultrasonic fusing to link it to zipper. Its advantages include high linking strength, quick shaping, easy dyeing, and easy recovery for the sake of environmental protection.

Description

In order to make the monofilament polyester lenticular wire of zipper stop

The present invention relates to the monofilament polyester lenticular wire, refer in particular to suitable plasticizer and the crosslinking agent of adding in a kind of polyester composition, what make that it is suitable for ultrasonic rapid shaping processing, is easy to dye and has a high bond strength can be in order to make the monofilament polyester lenticular wire of zipper stop.

The cloth that to be the mode that moves around through a begin chain in the utilization of slide fastener have a sprocket with two edges intermesh with sprocket and and connect or separately; And for effect section that limits sprocket and the utilization length that forms slide fastener, then can establish a backstop 10,11 (as shown in Figure 1) at the two ends of the sprocket suitable length section of two cloths, one of them backstop 11 is provided in a side of an end of sprocket 12 combinations, another backstop 10 then is located at cloth 13 respectively and is on the wherein sprocket 12 that separates shape, the device of this restriction slide fastener active length is commonly called as ending up and down for slide fastener.

Therefore only mainly providing the unlatching closure of slide fastener in certain section to carry out smoothly up and down and preventing that begin chain from coming off from sprocket of slide fastener also be a kind of barrier that stops that begin chain moves on only up and down.Slide fastener only is up and down to utilize the punching press of aluminium flake institute to be embedded to form traditionally, and its advantage is that operating speed is fast, and flat about per minute can be processed 70 slide fasteners; But only there have been some shortcomings up and down also in this aluminium matter, as: when clothes that slide fastener depended on will reclaim, it is metallic only can't together to reclaim with the slide fastener of polyester matter up and down, and need remove it separately, not only increase the degree of difficulty that reclaims, also increase its cost recovery on foot.Again, be to cooperate the slide fastener body of different colours, the baking vanish that must end up and down, this part is except that also increasing the cost, and its baking vanish face very easily peels off and forms mottledly, destroys the clothing aesthetic feeling.Moreover, aluminium matter only when utilizing machine-washing, not only easily produce up and down noise and can scratch the laundry groove face, and this aluminium matter is ended up and down when punching press if also can not produce the hard acute angle of stabbing human skin or colluding brokenly silk stocking really.In addition, this aluminium matter thin slice that utilizes punching press to clamp and be embedded on the slide fastener, because and the area that the slide fastener cloth that is both thin slice is combined is limited, cause its bond strength unsatisfactory, the state that only is adapted at normal light power uses down, excessive haling will make backstop peel off, and form common derailment occurring.

Therefore shortcomings such as environmental protection reclaims that difficulty, baking vanish come off easily that influence is attractive in appearance because aluminium matter only exists up and down, scratch implements and undercapacity have the new approach that replaces with plastic cement material then.For solving many shortcomings that aluminium matter is ended up and down, new end up and down with material on be the polyester material that adopts and make the identical material of slide fastener, need not carry out separating treatment again when it is reclaimed; Form then to be used in the polyester for the color of ending up and down in addition and add colorant for it, this polyester matter then be to utilize the mode of ejection formation to combine only up and down with slide fastener, its bond strength height.Ending in every respect on the function more traditional aluminium matter up and down as above-mentioned polyester matter ends progressive up and down, only still have a little drawback unavoidably, as: the speed of its ejection formation is slow excessively, and per minute can only be produced 0.75 slide fastener, be almost one of stamping forming percentage, quite do not meet economic benefit.Again, adding coloring material for mixing in the polyester grain of change need before ejaculation of its color reaches, and the process of this toning time-consuming quite, therefore the slide fastener that often all must process with colour system in long-time after toning once just meets productivity effect, but so also highlights its relatively poor processing mobility.Moreover the cost that utilizes its facility of mode of ejection formation and mould is all than the impact style height, but relatively its to produce benefit low singularly.In addition, though the polyester of utilization and slide fastener identical material can fully solve the trouble of recovery for what end up and down with material, but the molecules align of general polyester material belongs to linearity, and the crystallinity after its processing is complete to cause its transparency relatively poor and reduce outstanding property of dying of its dyeing and chromatophilia; Its fusing point improves relatively because degree of crystallinity is higher again, the temperature and time of its hot melt processing all will be improved and prolong relatively, this thermal welding die head that make to penetrate usefulness comparatively fast wears away, working (machining) efficiency also can't improve simultaneously, also reduces the zygosity of itself and slide fastener jointly.Moreover, ejection formation after processing because the imperfect burr that collude brokenly panty hose that also are easy to generate of removing of material extrusion head.And general polyester also exists easily crisp characteristic, makes ending up and down after the processing produce broken phenomenon when being stressed.

Adopting polyester for considering of reclaiming of environmental protection is that ending with material up and down of slide fastener is a kind of idea that has become, yet how to promote the processing convenience of this material and the outstanding property of dying of dyeing is the purpose that the present invention will reach.

Promptly the objective of the invention is to be to provide a kind of in the polyester composition, add suitable plasticizer and crosslinking agent, make its be suitable for the processing of ultrasonic rapid shaping, be easy to dye and have high bond strength in order to make the monofilament polyester lenticular wire of zipper stop.

The present invention is that the specific practice of reaching above-mentioned purpose is, adds suitable crosslinking agent (crosslinking agents) and plasticizer (plasticizers) and make its ratio become 7 (polyester) in general polyester material: 2 (plasticizers): 1 (crosslinking agent); This new polyester material is to improve the flowability of pure polyester material to improve its processability (processability) through plasticizer, lower its fragility (brittleness) simultaneously, and its molecule arranging structure is changed to obtain the preferable transparency, increase the dyeability of material by this and dye outstanding property.In addition, utilize the crosslinking agent of proper proportion increase behind the material to form intensity with improve pure polyester material made end stressed easily crisp drawback up and down.This new polyester material after plasticizer improves is owing to mobile increasing reduces its fusion point, therefore can utilize ultrasonic quick oscillation fusing mode, backstop about the moment ground formation on slide fastener, so can improve problem consuming time of adopting ejection formation processing commonly used, and obtain the economic way of a kind of shaping speed between punching press and ejaculation; Moreover, be the convenience of cooperation ultrasonic processing and the needs of backstop formation outward appearance, new polyester material of the present invention is to be a kind of flat section, and be rendered as goodly with band shape, so in supersonic process, just this material can be reached the sharp work of automation with the mode automatic transport of the roll coil of strip to the ultrasonic shaped device; In addition, the sprocket of new polyester material of this kind and slide fastener is all a kind of monofilament polyester; At last, this kind monofilament polyester lenticular wire be with transparent for its Essential colour, after forming backstop, have can have an X-rayed slide fastener body color ability to be suitable for the processing of any colour system slide fastener; And it also can add the monofilament lenticular wire that colorant makes the different colour systems of formation in the process that forms the monofilament lenticular wire, so as long as select identical simply or be similar to the tool color monofilament lenticular wire of slide fastener body colour system and be processed into backstop with ultrasonic, then just backstop can be constituted identical colour system with the slide fastener body, a large amount of the lacking flexibility of making of once toning of consuming time, the loaded down with trivial details or shoot mode of this measure and conventional aluminum matter baking vanish are compared, and obviously have incomparable convenience and processing elasticity.

Enumerating a preferred embodiment below in conjunction with accompanying drawing is described in further detail the present invention:

Brief Description Of Drawings:

Fig. 1 is the stereoscopic figure of general slide fastener;

Fig. 2 is a preferable stereoscopic sectional drawing of the present invention;

Fig. 3 is the present invention and the cross-sectional schematic that combines of slide fastener.

Monofilament polyester lenticular wire of the present invention be a kind of by polyester (polyesters), plasticizer (plasticizers) and crosslinking agent (crosslinking agents) through melting mixing and the weaving after formed polyester mix condensate, wherein plasticizer and crosslinking agent are plasticizer and the crosslinking agents that belongs to polyester system (POLYESTERS), as plasticizer be: Paraplex G-25 " certain herbaceous plants with big flowers 2 acid propylene glycol polyester ", belong to polyesters, a kind of plasticizer of polymer-type (POLYMERIC) is formed by dihydroxylic alcohols and binary acid condensation; Crosslinking agent belongs to peroxide type (peroxides) crosslinking agent, as BPO benzoyl peroxide (C ₆H ₅CO) ₂O ₂(Benzoyl peroxide), and its proportion is plasticizer 20～30% and crosslinking agent 5～15%, and make the ratio of itself and polyester reach polyester: plasticizer: crosslinking agent is about 7: 2: 1.Plasticizer and crosslinking agent that above-mentioned polyester is mixed in the condensate respectively have following effect:

Plasticizer: it mainly is to impel general polyester material through connecing skill shape polymerisation or section shape polymerisation produces a kind of intramolecular plasticization effect (internal plasticigation), make molecular structure arrange the more non-straight chain shape that becomes, and obtain preferable mobile and minimizing fragility; This measure causes polymeric fusing point to descend simultaneously, and approximately the fusing point than general polyester material hangs down 40～50 ℃, and has relatively improved its hot melt zygosity, makes it can finish hot melt under the condition of lower temperature, short period and engages; This characteristic also allows this polymeric dyeing dye outstanding property simultaneously and chromatophilia improves, and is beneficial to form the monofilament polyester lenticular wire of different colour systems.Plasticizer has the polymeric crystallization of inhibition simultaneously and forms, and makes that presenting general polyester material product is good transparency, and the feasible zipper stop of making according to this of this transparency can fully be compatible to the slide fastener of each colour system.

Crosslinking agent: it is to make the interior molecule of condensate form the combination of three-dimensional netted chain, and this new construction that is different from the straight chain shape molecules align of general polyester can allow condensate produce very good bond strength.

Proper proportion collocation by above-mentioned plasticizer and crosslinking agent makes and lowers polymeric fragility with plasticizer, avoids the stressed frangible shortcoming of product; Moreover the crosslinking agent that is aided with proper proportion is used lifting because of adding the deficiency of intensity that plasticizer causes.Therefore, plasticizer of the present invention and crosslinking agent have complementation and reach and make condensate produce easily processing, transparent, easy dyeing and the high balance effect of bond strength.

Owing to have good hot melt zygosity through the condensate after the plasticizer fusion, therefore only need under the operating environment of lower temperature and short period, can finish the making of zipper stop, and suitable worker's method of this operating environment be optimum with the ultrasonic welding; Because the characteristics of ultrasonic welding are that machine-shaping speed is fast, the smooth bright and clean nothing in composition surface is squeezed the burr that (signature) annotates, so just should close the characteristics of wood property of the present invention.Be the outward appearance demand that cooperates supersonic processing characteristics and backstop to form, polymeric preferable outward appearance of the present invention is a kind of flat section as shown in Figure 2 and banded monofilament lenticular wire 2; Take in and provide outside the ultrasonic processing of automation but this kind lenticular wire 2 has rolling, as shown in Figure 3, its flat outward appearance makes and the contact area of the cloth 13 of slide fastener strengthens, and engages the back in hot melt and constitutes bigger bond strength.Moreover, flat thickness adds that its fusing point belongs to the sprocket 12 of polyester system together for low, therefore under the effect of ultrasonic moment (about 2 seconds), its just hot melt infiltrate and be coated on as yet sprocket 12 peripheries of hot melt and sprocket 12 structures altogether fully, and forming backstop 3 structures that the jail can not be moved in the cooling back, the present invention that Here it is claims and can form the reason of high bond strength backstop.At last, the present invention utilizes ultrasonic to form backstop up and down, its per minute can be processed about 30～35 slide fastener, though more traditional aluminum punching type backstop per minute is few up to 70 slide fasteners, compares the speed that the ejection formation per minute has only 0.75 slide fastener and has had the economic benefit of automation; Still more; the present invention is except that all advantages with ejection formation backstop; still have punching type backstop the easy environmental protection that can't reach reclaim, the good and intensity advantages of higher of staining property of dyeing, the real zipper fabrication that gradually reaches the peak for the hierarchy of skill already provides a kind of technology of better and tool height economic worth.

Claims (4)

1, a kind of in order to make the monofilament polyester lenticular wire of zipper stop, it is characterized in that: mainly be made up of polyester, plasticizer and crosslinking agent, wherein plasticizer accounts for 20～30% and crosslinking agent accounts for 5～15% and constitutes a kind of polyester: plasticizer: crosslinking agent is about 7: 2: 1 polyester and mixes condensate; This polyester is mixed condensate, and to make section behind melting mixing again be the monofilament lenticular wire that flat and outward appearance become band.

2, monofilament polyester lenticular wire as claimed in claim 1 is characterized in that: plasticizer and crosslinking agent are plasticizer and the crosslinking agent that a kind of polyester is.

3, monofilament polyester lenticular wire as claimed in claim 1 is characterized in that: the monofilament lenticular wire is to utilize the processing method of ultrasonic hot melt to make it form backstop on slide fastener.

4, monofilament polyester lenticular wire as claimed in claim 1 is characterized in that: collect and use in the mode of axle volume.

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