DE1635418A1 - Yarn pack - Google Patents

Description

34367

Priority Japan, Pat. 9122/1967 v.14. 2. 1967 and Gbm. Wr. 62364/1966 BC July 4, 1966, No. 62365/1966 v. 4. 7. 1966 and No. 11844/1967 of 14. 2nd 1967.

Applicant:

Asahi Kasei Kogyo Kabushiki Kaisha
Where. 25-1, 1-chome, Dojimahamadori,
Kita-ku, Osaka, Oapan.

Yarn pack

The invention relates to packages of yarn or packs for similar material made of fibers and wound on.

Load a wide variety of everyday items today heat-sealed, including what are known as shrink films Plastics are used, for example made of polyvinyl chloride, Polyvinylidene chloride, polypropylene, polyamide, polyethylene, etc. It is also common to wrap multiple units with one Yarn, for example in the form of cones, balls, bobbins, rolls, etc., separately or in a stack, by means of to pack a protective film of the type mentioned above. For this purpose, the untwisted amount of yarn is temporarily and raw in the Wrapped in the foil and then on the foil with a hot gas

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niedium shaped, such as hot air or uampf, acted upon or heat radiation uon a .jär ^r: i3quelle subjected to, for example, a Ultrarotstrahlnr be Can.

Cylindrical foil tubes are advantageously used for this purpose used. In this case, however, it has been found that if the yarn consists of delicate, fine man-made fibers, For example made of nylon, polypropylene, acrylonitrile, polyester, viscose silk, acetate or the like, the heating energy is detrimental and has a considerable effect on the properties of the fibers. This often results in discoloration and others Damage in the fiber material.

Another major disadvantage with the usual, heat-sealed packs of yarn is that there is a central area form significant creases on each end face of the cone, ball or spool of thread, as this is where the end edges are located of the cylinder made of heat-shrink film is concentric Place over a limited area and heat shrink the film cannot absorb the excess material.

Another serious disadvantage is that the marginal edges of the wound yarn units slightly mechanical Are exposed to damage caused by contact with rigid foreign bodies. This is especially true during the with heat shrinkage associated packing process or even during the transport of packs with the protective

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Are wrapped in foil. If the yarn is made of delicate fine fibers or threads, they will increase in size difficulties described here.

To avoid the disadvantages mentioned here, the invention is based on a yarn package having a core £ us, those with a shrinking due to the influence of the poor Protective film is wrapped. The invention is characterized in that the amount of yarn wound on each of their Enfaces with a ring cushion or cushion made of foamed Synthetic resin is covered, and that the assembly, which consists of the amount of yarn, its core and the cushions, is essentially completely enveloped by a heat-shrunk protective film, with a limited surface area on each of the outer end faces of the ring pad is left uncovered by the film.

Foamed synthetic resin, such as For example polystyrene, polyurethane, polyethylene, polypropylene or a similar substance can be used to protect the of the yarn has the required properties and is shock-absorbing, is heat-insulating and moisture-resistant.

The cushions or cushions are preferably manufactured by injection molding. It is also possible to make pillows of this type Cut foam sheets. Furthermore, the cushions can be made that round bars of foamed Resin can be cut into slices.

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Biaxially heat-shrinking synthetic resin can be used as a protective film can be used, such as polyamide, polyvinyl chloride, polyurethane, polyethylene, polypropylene. The thickness of the slide can preferably be about 10-50 microns. The foil is generally applied to the pillow, yarn and core at temperatures of around 80-250 C for 3-12 seconds Shrunk arrangement.

Further advantages and features of the invention emerge from the following detailed description and drawings, in which preferred embodiments for example are explained and illustrated. Show it:

Fig. 1 is a longitudinal section through a first embodiment of the invention here on a single cone of yarn or a thread drum is used,

FIG. 2 shows a plan view of the object of FIG. 1, FIG. 3 shows a diagrammatic view of the yarn package shown in FIGS. 1 and 2,
Fig. 4 is a longitudinal section through a second embodiment of the invention applied to a single coil with parallel block-shaped winding,

5 shows a part of a longitudinal section through a third embodiment, In »elcher the invention on a stack consisting of partly conical block windings is applied, which in the broader sense with under the term "a stack consisting of quantities of yarn" should be understood as claimed below, but this does not include the conical cores,

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6 shows a complete longitudinal section through a fourth

Embodiment of the invention over the previous third is somewhat modified, Fig. 7 is a perspective view of a stack from

four cones wound up! windings which form a modification of the preceding fourth embodiment of the invention,
8 shows an axial section through a fifth embodiment,

which shows another possibility of modification, Fig. 9 is a plan view of the yarn shown in Fig. 8

pack,
FIG. 10 shows an illustration similar to FIG. 8 of a further one

Embodiment for a yarn package according to the invention, in a modification of the embodiment according to FIG. 4, FIG. 11 shows a perspective view of a cylinder Heat shrink film used as a protective film for manufacture a yarn package according to the invention is used, and

Fig. 12 is a part of a vertical section through a number of packages of yarn, one of which is particular for shipping have advantageous arrangement.

In the embodiment of Figures 1, 2 and 3 is a conical, hollow core 1 is provided, which is preferably made of paper or a plastic material, for example made of polypropylene. A quantity of yarn 2 is wound onto the conical core 1 and also has a conical shape. The top The end of the core 1 is rounded inwardly, so that

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a smooth edge results. The end protrudes over the amount of yarn 2 upwards by a distance marked "a", which can be about 4-14 ram. The upper smallest outer diameter of the core 1 is designated by "d" and can preferably be 10-80 mm. The lower or largest outer diameter of the core is ^{denoted by 11} D "and can be 20 mm. The UJand thickness" t "can be about 1-10 mm, while the height of the core 1 can be 100-300 mm. The bottom end of the core 1 protrudes by a distance "b", which can be, for example, 4-14 mm, downward from the amount of yarn 2. The yarn can contain 20-50 threads of a synthetic fiber material, such as nylon, polyester, acrylonitrile, Contains polypropylene, viscose silk, acetate.

A first or upper cushion 3 is preferably made of one foamed hard synthetic resin such as polystyrene foam, but made with a certain degree of elasticity. The pillow 3 is designed as a circular ring and has a central bore 3a, the diameter of which, if the ring is kept in its natural dimensions, is slightly smaller, about 0.2 - 1 mm, than the smallest top diameter "d" of the core 1. The upper or smallest outer diameter of the amount of yarn 2 can Be 120 - 240 mm; the outer diameter of the ring cushion 3 can then for example be from 122-130 to 242-260 mm, while the thickness of the cushion 3 can be 5-20 mm and accordingly is greater than the distance "a" of the protruding core 1.

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A second or lower cushion 4 is again preferably made of a foamed synthetic resin, which either the the same or a different one for the first cushion 3. The lower cushion is also a circular ring with a central hole 4a, the diameter of which is slightly, about 0.2-1 mm smaller than the largest lower diameter "D" of the core 1 is when the cushion 4 is kept in its natural dimensions. The outside diameter and thickness of the pillow 4 can be 125 - 260 mm bzu /. 8 - 25 mm. The ones mentioned here Numbers are used as well as those mentioned below just as an example.

The outer circumferential surface 2a of the yarn 2 is completely covered with a protective film 5, which extends upwards and downwards so that it covers the circumferential surfaces of the two cushions 3 and 4 and the outer edge areas 6 and 7 of the outer end surfaces of the cushions, uiie also shows FIG. 2, which illustrates a top view of the pack arrangement shown in FIG. The film 5 is, for example, 10 microns thick and made of a heat-shrinkable synthetic resin such as, for example, polyvinyl chloride or a similar material. The film 5 is fixed to the assembly by the heat shrink process, and / he is also explained in more detail below * The central circular zone 8 and 9, the outer end surface of the pad 3 and 4 is not covered by the sheet 5, but intentionally made released to the surrounding air for the reasons mentioned above.

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The spooled amount of yarn 2 is completely due to the combination of the conical core 1, its cushions 3 and 4 and the protective film 5 enclosed and thus practically uon the surrounding air isolated. Moisture, dust and dirt that are in the air and damage the amount of yarn could not get into the interior of this envelope. The amount of yarn is thus safely protected, even when shipping.

Because the diameter of the central bores 3a and 4a is somewhat smaller chosen as those of the associated ends of the conical core 1 and since the cushions 3 and 4 are somewhat elastic, they form Contact surfaces between the core and the cushion provide an effective seal. This will protect the amount of yarn 2 in the explained way still v / strengthened.

The amount of yarn 2 can, for example, consist of a heat-sensitive fine material and composed of fine threads, for example nylon or the like, or a bundle such threads form. If the protective film is to be attached to the Klenge using the usual heat-shrinking method, without that on the end faces of the amount of yarn pillows are set according to the invention, the hot gaseous medium occurs, such as for Example steam, directly with the end faces of the amount of yarn in contact and thus gets into the interior of the file ng e, whereby damage and discoloration of the sensitive threads result.

In contrast to this, according to the invention, the protective film only does

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placed over the end faces of the amount of yarn 2 with the interposition of the cushions 3 and 4. As a result, the above-described Disadvantages excluded. ".

As shown in FIG. 1, the outer edge of each of the cushions 3 protrudes and 4 radially over the associated marginal edge of the yarn pile, which provides reliable protection against an otherwise possible mechanical damage to these marginal edges is given, which has so far often been manufactured during the transport of Packs occurred,

The two ends, in particular the upper end of the conical core 1, can easily be protected against mechanical damage that would otherwise be possible by the cushions 3 and 4, in particular due to the arrangement of the latter. will. If such damage were to occur, the smooth and continuous unwinding of the yarn from the frustoconical winding would often be adversely affected, as is well known. .

The central area 8 or 9 on the outer end face of the cushion 3 or 4 remains of the protective film 5, which is heat-shrunk is applied, uncovered. If the foil is treated in the usual way, around these end faces completely to be covered up to the point, and considerable folds and Crimps within the central area during the packaging process develop. This would improve the appearance and thus the quality of the packaged frustoconical winding decreased. «To -

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In particular, the puckers and wrinkles become complete avoided, which are formed from the ends of the tubular film and in the limited Wittebereich at the end faces of the Yarn amount appear by increasing the amount of heat shrinkage of the film. An ultrasonic medium is used for this purpose, the significantly higher temperatures »such as between 150 and 200 ° C, compared to the usual temperature, which is between 80 and 150 ° C »With known packs, this would the yarn material, for example polyethylene terephthalate, considerably to be damaged*

In the case of the packaging according to the invention, however, this can so far usual serious disadvantage can be substantially eliminated since both end faces in the above embodiment the frustoconical amount of yarn 2 against contact are protected with the noise medium.

ßie provided in the embodiment of Figures 1 and 2 Fftittelberiche 8 and 9, which are left free from the protective film 5, are otherwise of great importance. Because of With this arrangement, the amount of heat shrinkage at the ends of the film cylinder can be significantly reduced because the There is practically no need to fear the formation of wrinkles etc. in the sense explained above.

Therefore, according to the invention, the application of heat for shrinking the film can be in the range of BO - 150 C as above and run for 3-8 seconds. This

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Heat treatment only results in a slight increase in the yarn temperature to lead; in detail, with etuia 4 - 10 ° C is closed calculate, so that there is no noticeable effect on the yarn material.

This feature also applies to all other embodiments of the invention, which will be described below.

FIG. 3 shows a reduced perspective view of FIG complete package described so far.

In the current embodiment of the invention, see Figure 4, the conical core 1 of the first embodiment has been replaced by a completely cylindrical core 1 ', which is also hollow. The cylindrically wound amount of yarn 2 'has convex end surfaces instead of the flat end surface of the first embodiment. Cushions 3 ¹ and 4 ¹ are generally domed in cross-section in order to provide better connection with the end faces of the winding cylinder and to permit better handling of the overall package. Flat top and bottom surfaces 100 and 101 are formed on the cushions 3 ¹ and 4 ¹ , which essentially occupy the uncovered areas and serve to ensure a stable position of the finished yarn package when it is placed on a stationary carrier or holder .is set.

Other advantages and features are similar to those described in the previous embodiment. Therefore are for these purposes the same reference numerals together with

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used a comma to simplify the overview.

Figure 5 is a partial representation of two identical frustoconicals Packages 10 and 11. The upper frustoconical package 10 has a conical core 12 and a quantity of yarn 14, which is wound on the core. In the same Way, the lower frustoconical pack 11 includes a conical core 13 and an amount of yarn wound thereon 15th

Between the two truncated cones 10 and 11 is an intermediate cushion 16 is provided, which in turn preferably consists of plastic foam, such as foamed polystyrene resin or similar. This cushion 16 has a stepped iflittelbohrung which has an upper, larger bore part 17a which closely fits the bottom end of the upper conical Core 12 takes up. A lower, smaller bore portion 17b closely fits the upper end portion of the lower tapered one Core 13. In addition, the pad 16 is at its top and bottom in contact with the bottom ring surface of the upper amount of yarn 14 or the upper annular surface of the lower amount of yarn 15 held. The resulting twin arrangement of the interconnected truncated cones 14 and 15, including the intermediate cushion 16, which is a small, however Has sufficient elasticity is enclosed in a protective film 18. Although this film 18 is only partially shown in FIG is shown, the overall appearance corresponds to that of the film wrapping 18 * in FIG

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Lower packing element closely connected and protected in a satisfactory manner as if it were single packs As in Figure 1. In this case, the upper end of the lower conical core 13 protrudes a small distance inside the bottom end of the upper core 12.

The intermediate cushion 16 'of the dispensing pack according to FIG. 6 is provided with a straight central bore 17 'instead of the stepped one Bore 17a, 17b »in the previous embodiment according to FIG. 5. In this embodiment, the upper and lower conical core 12 ', 13 * are a small one like a talescope Pieces pushed one on top of the other, but this creates a solid mechanical Connection established between the two U

The deck kias 19 and the Bpdenkisssn 20 are exactly the same liieise like the cushions 3 and 4 of the first version, see Figures 1 and 2, shaped and arranged * Therefore, no further detailed description is required.

The Zuiischenkissen 16 'takes with a slight elastic Pressure the mechanically connected IeLl of the two cores 12 ', 13 'on. The thickness of this pillow can therefore be smaller than that of the additional pillow 16, FIG.

In the two embodiments, see Figures 5 and 6, has Zufischenkisssn 16 or 16 * have a larger diameter than the lower and largest diameter of the upper frustoconical element and of course as the upper and smallest outer diameter

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knife of the lower frustoconical element. Self Therefore, if the Zu / illingsordnung horizontally on a automatic packaging machine is put into a Protective film 18 bzu /. 18 'to be wrapped up, the hot shrunk are the otherwise exposed edges of the two frustoconical elements 14 * and 15 * sufficiently protected against any mechanical damage. The arrangement of the ceiling and floor cushions 19 and 20 is used the same purposes, and forms a mechanical protection for the upper or lower edge «This advantage also applies for the first two embodiments, see Figures 1-4.

The twin arrangement can be inserted into the protective film 18 or 18 ' can be packed without any damage to the heat during the heat-shrinking process procedural need to be feared. The outer disk surfaces of the top and bottom cushions 19 and 20 have FlJittelbereich 21 and 22, which are left free from the protective film will. The same reasons apply for this as explained with reference to FIGS. 1-4.

All cushions 19, 16 or 16 * and 20 can preferably be designed in this way that they have a common outside diameter, whereby the handling of the arrangement when applying the film in the automatic packaging machine is improved. This feature is particularly useful when the package contains a number of around five individual elements in a row are arranged and mechanically coupled to one another, as with With reference to Figures 5 and 6 has been explained. aside from that

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1635411

the finished product can be easier and more convenient to use Manufacture of shipping packages in the form of cardboard boxes be handled.

For example, FIG. 7 shows a pack containing four truncated cones shaped units 23-26, which are stacked and united in the manner explained above. These Embodiment usually a ceiling and a floor cushion 27 bzu /. 28 on. Furthermore, three intermediate cushions 29, 30 and 31 are provided.

The uncovered central area 32, which is on the top of the entire pack is present, which is shown here essentially in its horizontally placed position, forms a kind of polygon and is shown here, for example, as a hexagon that has concave side edges instead of a correct circle shown in FIG.

Another embodiment is shown in FIGS. An upper cushion 3 ″ is formed on its upper side with a circular groove 33 which is concentric to the central bore 3a ^M. The upper edge 34 of the protective film 5 ″ hangs over the groove. In the same way, a lower cushion 4 ″ is designed on its bottom surface with a concentric circular groove 35; the edge 36 of the lower part of the same protective film 5 ″ lies under the groove 35. This embodiment results in an edge that is easy to grasp Packing film 5 ", so that the pack is easier to open and the pillow

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can be removed to expose the 2 "amount of thread and take yarn from the crowd. Other components including the conical core 1 ″ have the same Features uiie the corresponding parts in the embodiment according to FIGS. For a detailed explanation is therefore waived.

In a modified form of the embodiment shown in FIGS. 8 and 9 , the circular channel 33 or 35 is replaced by a plurality of radial channels which have the same purpose and which are shown in dotted lines at 102 in FIG.

FIG. 9 shows six angular incisions in the edge of the protective film 5 ". These angular incisions correspond to the tips 34 of the hexagonal Opening or the free central area 32. This UJin— Small incisions are used to make it easier to tear open the protective film 5 "with your fingers when the yarn package is opened shall be. The length "1" in FIG. 9 can preferably be 10-60 mm depending on the size of the packing cylinder or truncated cone and the properties and thickness of the film 5 ".

FIG. 11 shows a film cylinder 105 which is produced as a starting material from a sheet of film and therefore has a longitudinal seam 45 has. The film cylinder can, however, also be produced seamlessly in the known extrusion process. Along the top edge In the film cylinder, six incised slots 46 ′ are provided, which can be 2 to 20 mm long. In the same way

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are six slots 47 along the lower edge of the film cylinder 105 formed.

When used in the heat shrinking technique, the cylinder contracts considerably. Its original length, which can be, for example, 10 120 mm depending on the overall size of the pack, is reduced by 20-50 %. Each of the end edges of the cylinder then forms the shape of a polygon, in this case a hexagon, due to the placement of the slots. The number of sides of the polygon can be increased to 20, for example, by increasing the number of slots. Conversely, the number of slots can be reduced to just one. In this case, the length of the single slot can have the greatest possible length, for example 20 mm. If a longitudinal seam 45 is provided on the film cylinder, it can very well serve as a tear point for the protective film of the finished yarn package.

If the film cylinders are separated from an endless tube in suitable lengths by a hot cutting device, The arrangement of the slots can be dispensed with if the yarn package has the embodiment shown in FIGS. 8-9 or 10, in which the protective film can be easily torn.

In FIG. 10, the two halves of the figure form modifications corresponding to the figure the second embodiment, see Figure 4. The main difference compared to the previous embodiment, the cut of the upper and lower cushions is 3 "*

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and 4 ¹ ". Each shows an outer contour resulting from the arrangement of a circular recess 37, 38, 39 or 40 with a curved bottom. The peripheral edge 411 42, 43 or 44 of the heat-shrunk protective film 5" hangs over the corresponding one Channel 37, 38, 39 or 40 so that the film can be easily torn with the fingertip. Further features of the main components, which are provided with the same reference numerals as used in FIG. 4, but with the addition of three commas, are essentially the same as explained above. A further description is therefore not required in this context.

FIG. 12 shows in section the arrangement of a number of yarn packages which are suitable for accommodation in a larger shipping container (not shown). Each individual Tsilpackung essentially has the features shown in Figure 5, so that the same reference numerals Have been used for the sake of simplicity. In this case there is a tongue and groove connection 106 between each two adjacent intermediate cushions 16 are provided. The figure shows that a relative movement of the packing parts need not be feared. The intermediate cushions 16 can have the same design and dimensions. Cs is only required to arrange adjacent pack parts in the opposite position to one another. Although not shown, each of the end pads can preferably be provided with the same stepped configuration so that the above-mentioned type of groove and

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the connection is established.

-Patent claims-

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Claims (14)

Patent claims before 1. Pack of yarn with a protective film covering one or more Contains amounts of yarn on one or more cores, characterized in that the amount of yarn wound or the wound quantities of yarn (2) each at the end faces is or are covered with a ring cushion (3, 4) made of foamed synthetic resin and that the amount of yarn or the Amounts of yarn the core or the cores (1) and the cushion existing Arrangement is essentially completely covered by a heat-shrunk protective film (5), the one limited tile area (8, 9) on the outer end faces which leaves the end cushion uncovered. 2. Yarn package according to claim 1, characterized in that the amount of yarn consists of a frustoconical or cylindrical winding (2 or 2 ¹ ). 3. Yarn package according to claim 1, characterized in that the amounts of yarn from a stack of frustoconical or cylindrical windings (14, 15; 14 ', 15'). 4. yarn package according to claims 1-3, characterized in that the foam plastic cushion (3, 4) made of polystyrene, polyurethane, polyethylene or polypropylene. - 21 - 109833/0374 5. Yarn package according to claims 1-4, characterized in that - That the protective film (5) made of polyvinyl chloride, polyvinylidene chloride, Polypropylene, polyamide or polyethylene is made. 6. Yarn package according to one of the preceding claims with a plurality of quantities of yarn which are arranged in a row, characterized in that a Ziuischenringkissen (16; 16 ') of foamed synthetic resin is provided between each pair of adjacent sets of yarn (14, 15; 14', 15 ') is. 7. Yarn package according to one of the preceding claims, characterized in that the outer diameter of each cushion (3, 4; 16) is greater than the amount of yarn (2j 14, 15). 8. Yarn package according to one of the preceding claims, characterized characterized in that the thickness of each cushion (3, 4) is greater than the protruding free end portion of the core (1) Amount of yarn (2). 9. Yarn package according to one of the preceding claims, characterized in that the bore (3a, 4a) of each ring cushion (3, 4) is slightly smaller than the outer diameter of the core end to be received by the bore, so that on an elastic contact pressure acts on the core (1) the pillow sits on the core. - 22 - 109833/0374 10. Yarn package according to claim 6, characterized by a cushion (16) with a stepped bore (17a, 17b). 11. Yarn package according to one of the preceding claims, characterized in that each on the outer edge surface A shoulder (106) is formed in a pillow (16). 12. Yarn package according to one of the preceding claims, characterized in that the protective film (5) consists of a heat-shrunk film cylinder (105), the one with a (plurality of incised slots (46) is provided along at least one end edge. 13. Yarn package according to one of the preceding claims, characterized in that each c * ~ '' -.Jk ^ ij- ³ π (3 ¹¹ , 4 ") is provided with a circular concentric groove (33 bzu /. 35). 14. Yarn package according to one of claims 1 to 12, characterized in that each of the end cushions (3 ^f , 4 ') is provided with a plurality of radial recesses (tO2). 109833/0374