CN1042742A

CN1042742A - New polyester fiberfill

Info

Publication number: CN1042742A
Application number: CN88107859A
Authority: CN
Inventors: 克拉克·拉斯特·布罗德斯
Original assignee: Namil Dubang
Current assignee: INVISTA TECHNOLOGIES R L SA
Priority date: 1987-11-13
Filing date: 1988-11-11
Publication date: 1990-06-06
Anticipated expiration: 2003-11-11
Also published as: DK630588D0; KR890008363A; NZ226935A; AU2502788A; AU607278B2; KR910008667B1; BR8805884A; JPH01148809A; DK630588A; NO167309C; PT88997A; NO167309B; CN1033657C; JPH03269114A; IN171801B; FI885221A0; DE3879110D1; NO885050D0; IE63237B1; ATE86678T1

Abstract

Cross section is circular new polyester fiberfill, wherein is surrounded with a plurality of lateral openingly around an axle certre hole, and preferably arrange with the hexagon filling mode in totally 7 holes, and preparation and use the method for this oakum, the goods of also useful this novel oakum institute fibrefill.

Description

New polyester fiberfill

The present invention relates to new-type polyester fiberfill, have a plurality of continuous holes along its filament length direction in this oakum, the invention still further relates to the manufacture method and the purposes of this oakum, and the goods of using this novel oakum institute fibrefill.

Polyester fiberfill (being referred to as the polyester fiberfill material sometimes) has been widely used as comparatively cheap fibrefill and/or heat insulating material formed, is applicable to pillow, batts and other family expenses material, comprises the material of making the bed, and also as dress material, has now dropped into large-scale industrial production.At first, as other kinds polyester fiber, employed also is the solid fibers of circular cross-section, and these are the most cheap fibers of manufacturing, and the polyester fiberfill of this circular cross-section still as commodity in use.But before about 20 years, people propose also to bring into use hollow polyester fibre, and at United States Patent (USP) 3,772, No. 137 and Glanzstoff are in BP 1,168, disclosed in No. 759 as Tolliver.What Tolliver proposed is single hollow or center continuous axial doughnut.Its hollow preferable shape is a noncircular cross section, but also disclosed the cross section and approached circular hole, and owing to have the hollow polyester fiberfill of single circle and non-circular centre bore than solid oakum light (density is littler), and because thermal property is better, also because of more attractive in appearance, so develop into large-scale production.In recent years, a kind of improved hollow polyester fiberfill has appearred again, as european patent application 267, No. 684 disclosed, be characterized in four equal and opposite in directions being arranged round an entity axle center, spacing is identical and be the hollow of noncircular cross section, so the cross section of this monofilament is tetragonal peripheral profile, and limited by four straight flanges and four fillets, also have the zigzag curled configuration simultaneously and have smoothing preparation is arranged, make it to have very high bulkiness and bulk durability, and can improve its flexibility, make it more to resemble the natural down oakum.

Although it is near over several years for proposing and the existing some improvement of various existing configuration of the polyester fiberfill in industrial tool continuous axial hole, amazing is to be significantly different with former configuration and to have superiority that by improved polyester fiberfill of the present invention the present proves as follows respectively:

By the present invention, the polyester fiberfill filament denier that is provided is about 5-20, and the periphery in cross section is circular basically, there are at least 7 to be the continuous hole of circular cross-section substantially along the filament length direction, it is to be positioned at central authorities haply that one cylindrical void is wherein arranged, remaining hole big or small each other basic identical and with essentially identical spacer ring around medium pore, and also equate substantially with medium pore with the spacing of monofilament neighboring.By one embodiment of the present invention, all hole is preferably big or small basic identical, and also all equates substantially with the spacing of adjacent pores, so be arranged in hexagon with regard to constituting just in time seven holes, promptly there are six holes in hole of central authorities on the hexagonal, will this be stressed and discuss below.

Yet, also can arrange like this, making the section ratio of medium pore exactly, each is lateral opening big slightly, and lateral opening big or small identical and mutual spacing is equated, and with the periphery sides of medium pore also be equidistant, the advantage of arranging like this is to possess a bigger medium pore; According to this embodiment, each lateral opening preferably symmetry arrangement, and should be even number, preferably totally 8, like this, together with medium pore totally 9 holes.

Preferred total pore space content generally is about the cross-sectional area calculating of 8-25%(by this monofilament polyester, averages).

As the present technique field known and will in hereinafter the explanation, it is crucial making polyester fiberfill that Texturized bulkiness and bulkiness durability for it take place, the number that curls the preferably about 4-12 of per inch is individual curling, is equivalent to every centimetre of about 1.5-5 and curls.

The most handy a kind of durability smoothing preparation of this kind oakum carries out smooth treatment.

By the present invention, the preparation method of this kind new polyester fiberfill and its precursor monofilament also is provided, and for example hereinafter described, also comprise indoor appliances and apparel product with this kind new polyester fiberfill institute fibrefill, comprise separately with this kind new polyester fiberfill or with other fibrefill material blending after the goods of institute's fibrefill.

Fig. 1 is the cross section microphoto of the typical polyester oakum monofilament of one embodiment of the invention.

Fig. 2 is a kind of enlarged drawing that bakes the spinneret orifice that spins polyester fiberfill monofilament shown in Figure 1 that is applicable to.

Fig. 3 is the cross-sectional view of expression another embodiment of the present invention.

The present inventor be sure of, the most basic key element of the present invention is number and the arrangement mode along a plurality of continuous holes of this kind circular monofilaments length, and for the improvement of the polyester fiberfill that proposes up to now or used. People can infer, wherein some advantage can be by looking back and just can obtaining explaining with the configuration that technology is arranged earlier/cross section phase analogy or contrast at least, still for polyester fiberfill up to now, believe this kind combination of each key element or new. The present inventor believes that circular peripheral shape is very important. The present inventor believes that also the hole that is positioned at central authorities that is shaft core position also is a key element; In general, also have the feature that is previously proposed by Tolliver by polyester fiberfill of the present invention, but the difference of the configuration that polyester fiberfill of the present invention and Tolliver invent is that the former provides a plurality of substantially parallel holes, and the latter only has a hole. European patent application 267, a plurality of substantially parallel holes (4) have been provided for No. 684, therefore compare existing some improvement with the polyester fiberfill of the Tolliver that only has an axle center hole, european patent application 267, aspect several its characteristics are arranged No. 684, namely the periphery of cross section is quadrangle basically, and the axle center of an entity is arranged, and only have 4 continuous parallel holes, hole itself is not circular and four angles or four protruding lobe positions that just be positioned at quadrangle; As will pointing out that hereinafter polyester fiberfill of the present invention might improve its curled configuration, and this kind curled configuration believes for the polyester fiberfill that technology is arranged earlier it is to be difficult to accomplish, even causes and can not accomplish.

Although the present invention also is not limited to any operating principle, or owing to related factor much and to resulting improvement does not have perfect understanding to be not limited to the reason of any supposition yet, but can infer a central hole of the present invention and a plurality of lateral opening configuration, owing to can possess higher stiffening property to identical hole content, so the resistance to compression recoverability is more excellent; And can further infer; after Texturized; this curled configuration provides round corner angle; rather than the curled configuration of more zigzag or acute angle arranged; rear a kind of configuration is that the polyester fiberfill configuration regular meeting when Texturized in the technology that has earlier with similar hole content occurs; (again because the periphery of cross section is circular) just can possess more excellent friction character and more excellent durability during use like this. Configuration shown in Fig. 1 can possess These characteristics fully, and this kind configuration just in time is 7 holes, their big or small phase All the same Deng, mutual spacing, in other words, be a kind of hexagon arrangement mode, the present inventor believes to be exactly a kind of preferred structure like this, is symmetric figure, has again optimum intensity: a weight relativity (by the light requirement of its body). But in some purposes, it is more quite a lot of to enlarge (with respect to lateral opening) to central hole, therefore just uses the big central hole that has that Tolliver proposes, and also possesses simultaneously the advantage of loose structure; In this respect, the present inventor believes that symmetrical arranging is advantageous; In other words, as shown in Figure 3, by 8 identical sizes lateral opening 21 equidistantly to arrange around central hole 22, become cross section and substantially be circular 23 and the monofilament in 9 substantially parallel holes altogether, like this, just can provide some advantage, self-evident, also be fine by a plurality of lateral opening other arrangement modes that center on a central hole, but generally the symmetry than hexagon filling arrangement mode is low.

The technology of in principle, getting the hollow monofilament from the molten spinning of polyester or other synthetic polymers is for a long time known in this area. H.Bohringer and F.Bolland are in Faserforschung and Textiltechnik, 9, No, 10(Qctober, 1958), pp 405-416 has published the paper that is entitled as " Development and Evaluation of Profiled Synthetic Fibers Withand Without Hollow Core ", and in wherein having quoted from several pieces of other documents. Although what the document was mainly said is to make the nylon monofilament, for the usefulness of making textile fabric, for example for knitting, so different from the polyester fiberfill as the fibrefill material, their basic design is identical with regard to making the hollow monofilament. Yet, although proposed several porous hollow monofilament in the document, and with designing for obtaining the used spinning plate of these porous hollow monofilament, but in this document (and other several pieces of documents that propose together), do not disclose out how to make configuration of the present invention, that is the basically monofilament of circle in a central hole and at least 7 holes of sum is arranged. In order to finish this task of present proposition, there is quite big difficulty, and must carry out great many of experiments work, because monofilament and its Kong Doutai are very thin, and the difficulties such as the expansion phenomenon behind the known spinneret orifice of people and so-called " canting " phenomenon, some people suspected once that can this task be finished in enforcement. But as described later, this task has been finished in the spinneret orifice design of using as shown in Figure 2, has arranged 6 spinneret orifice 11(on the face of this spinning plate 12 at this spinneret), so can be with polymerization Thing goes out by the extruding of each spinneret orifice, then coalescence effect takes place and forms as shown in Figure 1 circular monofilaments, and 7 holes are wherein arranged, and the size in each hole is substantially the same, and mutual spacing is also substantially equal. Although when the design of reviewing in the past, can find that the design has followed the General Principle that has illustrated in the art, but mention just above having the circular porous polyester monofilament in a central hole for making the present invention, must pay great efforts and make great many of experiments just might success.

Remove by the present invention and make outside the polyester monofilament with particular configuration, each step when this kind monofilament is made, comprise the preparation of this polymer, and the processing of these monofilament, be processed into for the carrying of short fiber and this oakum material with as the purposes of the oakum material of some goods, for example make pillow and other fibrefill goods such as batts, or make the quilting batts, comprise quilted product, comprise clothes etc., can be undertaken by known method, for example with quote in other places method described in the technology be arranged earlier herein. Such as front explanation, preferred polyester polymers generally is poly terephthalic acid ethylene glycol ester, be easy to get because its industrial output is big, and price is more honest and cleaner, and can select suitable relative viscosity by the processing condition, in order to be provided as the required configuration of basic key element of the present invention. Can also use a kind of chain branching agent, described in 014, No. 246 that is jointly applied for this case on February 11st, 1987 by people such as Broaddus.

As front pointed, polyester fiberfill is carried out " smooth " processing to be known for public affairs for a long time, and be put to commercial Application, for example use polysiloxanes as the smooth treatment agent, for example the United States Patent (USP) 3 of Hoffman, 271, No. 189, the people's such as Mead United States Patent (USP) 3,454, No. 422, the United States Patent (USP) of Ryan, 3,488, No. 217, No. 4,146,674, the people's such as Salamon United States Patent (USP), and Japanese patent laid-open publication gazette 58-214, the 585(1983 of Takemoto Oil﹠ Fat Co.Ltd) number disclosed content. Polysiloxanes and/or other smooth treatment agent can be used for improving the outward appearance of polyester fiberfill, and preferably use in the present invention these smooth treatment agent to reach some requirement. , in disclosed in the common application case 921,646 on October 21st, 1986, the smooth treatment agent of provable non-silicone class is useful for some purpose such as Marcus. Smooth treatment agent preferably " curing " for example with the method for being heating and curing, thereby can improve its durability in most of purposes to monofilament.

Further illustrate the present invention by following example.

Example

With relative viscosity is that 20.4(is dissolved in 80 milligrams of polymer in 10 milliliters of hexafluoroisopropanols that contain 100ppm sulfuric acid, in 25 ℃ of mensuration) polyethylene terephthalate be spun into monofilament, polymer temperature is 291-297 ℃, spinning speed is 900 yards/minute (823 meters/minute), 288 pores are arranged on the used spinning plate, the output of each pore is 0.306 Pounds Per Hour (0.139 kilogram/hour), and used spinneret orifice as shown in Figure 2.These combination of monofilaments are become rope form (lax stretching dawn number is 914,000).In a usual manner this rope form silk being stretched, is to carry out in 90 ℃ hot wet spray drawing zone, and draw ratio is 3.46X.The monofilament that has stretched is carried out Texturized in the conventional stuffer box crimper of cantilevered (3.5 inches, 8.9 centimetres of sizes), the rope form silk after will curling then is lax in 180 ℃ of bakers.The smooth finishing agent that will contain a kind of poly-amino silicone is applied on this monofilament, makes that the polysiloxanes solid contents is a 0.32%(weight on the fiber), cover the antistatic finishing agent that applies a kind of routine, the about 0.07%(weight of consumption then).In a usual manner fiber is cut the staple fibre that becomes 3.0 inches (75 millimeters) length then.It is about 12.3% to record the average pore total content of this fiber, and filament denier is about 9.The cross section of these fibers wherein has 7 parallel big or small essentially identical continuous holes as shown in Figure 1, and one of them is at the center of monofilament, and 6 with substantially equidistantly around medium pore in addition.The outside of monofilament is circular, and is smooth.

Make the similar sample of dawn number (C) in a similar manner, difference is the continuous hole parallel with 4, axle center that an entity is arranged, average total pore space content is 17.7%, and with its Texturized curling number of the unit length identical and bulkiness (at 0.2 pound/square inch) of becoming, for the usefulness of contrast with above-mentioned 7 hole fibers.

Measure every character of 7 hole examples (1) and 4 hole comparative sample (C), list in the subordinate list.The fiber that is to be noted that it is less to frictional coefficient of fiber, and more better 0.001 pound/square inch bulkiness, and the two all is amazing superiority.

4 hole oakums of 7 hole oakums of the present invention and contrast all are processed into 20 ounces roll roll up the batts pillow.As shown in Table, their height is the same, but makes us subjectively feeling more soft and more comfortable with the pillow of 7 hole fiber manufacturings, comprise newly make and through in experiment, step on stamp after, all be like this.The pillow of 7 hole fibers is presented at compression back and restores slowlyer, and this is unusual favorable properties.

Table

Product per inch TBRM bulkiness (inch) fiber is to pillow height

0.001 pound/0.2 pound/fiber of crispation number rub (inch)

After square inch square inch wiping coefficient is newly stepped on and is stamped

1-7-hole 4.8 6.25 0.43 0.203 9.15 8.07

C-4-hole 4.5 5.98 0.45 0.219 0.09 8.22

Claims

1, by the about 5-20 of filament denier, monofilament cross-section periphery is the oakum that circular monofilament polyester constitutes substantially, at least 7 cross sections of length direction along this monofilament are circular continuous hole substantially, one of them hole is located substantially on the center, all the other each hole dimensions equate substantially each other and with substantially equidistantly around this medium pore, and also be equally spaced apart from this medium pore and this monofilament neighboring.

2, by the polyester fiberfill of claim 1,7 essentially identical holes of size are arranged wherein, and also be substantially the same with the spacing of adjacent holes.

3, by the polyester fiberfill of claim 2, oakum wherein is to have carried out smooth treatment with the agent of a kind of durability smooth treatment.

4, by each polyester fiberfill among the claim 1-3, total pore space content wherein is about 8-25%.

5, by each polyester fiberfill among the claim 1-3, oakum wherein is through Texturized, its curling number be the about 4-12 of per inch curling

6, a kind ofly prepare improving one's methods of polyester fiberfill, its improvements are characterised in that it is circular monofilament basically that the polyester melt-spun is become the neighboring, cross section, it is circular continuous hole substantially that the length direction of suitable monofilament has 7 cross sections at least, one of them hole is located substantially on the centre, the size in all the other each holes equate substantially each other and with substantially equidistantly around medium pore, and also be to equate substantially with the spacing of medium pore.

7, a kind of preparation method of the polyester fiberfill through smooth treatment, its step comprises that it is circular monofilament substantially that the polyethylene terephthalate melt-spun is become the cross section periphery, and the length along monofilament has the continuous hole that at least 7 cross sections are circle substantially, one of them hole is located substantially on the center, the size in all the other each holes equates and each other substantially with substantially equidistantly around medium pore, and with the spacing of medium pore also is to equate substantially, by stretching these monofilament are processed into fibre bundle then, on it, use a kind of smoothing preparation, through Texturized and relax, then these monofilament are processed into staple fibre.

8, press the method for claim 6 or 7, it is circular hole along filament length direction and cross section substantially that monofilament wherein contains 7, one of them hole is located substantially on the center, the size in all the other each holes equate substantially each other and with substantially equidistantly around medium pore, and also be to equate substantially with the spacing of medium pore.

9, the batts of mainly forming by each polyester fiberfill among the claim 1-3.

10, a kind of family expenses of fibrefill or apparel product, wherein fibrefill has by each polyester fiberfill among the claim 1-3.