Spunbond bicomponent spinning package

Abstract

The present application relates to the technical field of spinning assembly, especially to a kind of spun-bonded bicomponent spinning assembly, including the liquid inlet plate, diffusion plate, composite assembly and spinneret that are sequentially stacked, composite assembly is provided with composite unit group, composite unit group is made of several arrays of composite units, several spinneret orifices are arrayed on the spinneret, several spinneret orifices and composite units are one-to-one corresponding arrangement, the liquid inlet plate is used to respectively transport skin layer material and core layer material to diffusion plate, a kind of spun-bonded bicomponent spinning assembly in the present application when using, the present scheme adopts skin-core composite structure, core layer material is polypropylene (PP), its melting point is about 165 DEG C, skin layer material is polyethylene (PE), its melting point is about 130 DEG C, when hot rolling melts, using lower temperature makes skin layer melt and bond, core layer performance remains unchanged, when bonding with glue, effect is good and does not damage the tackiness of glue, can prevent composite delamination.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spinning assembly, in particular to a spunbond bicomponent spinning assembly. BACKGROUND

[0002] With the improvement of the safety consciousness of the whole people, the consumers put forward higher requirements on the safety of the health products in the selection and purchase. In order to realize better softness, various additives must be added in the PP spunbond non-woven fabric. The existing spinning assembly has poor effect in the adhesion with glue, and destroys the adhesion of the glue, resulting in the delamination of the composite, so it is necessary to add softening agent, slip agent, elastomer and other additives to realize the required heat sealing property and softness, and the safety is low. At the same time, the additives are precipitated in the storage process, thereby affecting the adhesion of the hot melt adhesive. SUMMARY

[0003] The technical problem to be solved by the present application is that the existing spinning assembly has poor effect in the adhesion with glue, and destroys the adhesion of the glue, resulting in the delamination of the composite, so it is necessary to add softening agent, slip agent, elastomer and other additives to realize the required heat sealing property and softness, and the safety is low. At the same time, the additives are precipitated in the storage process, thereby affecting the adhesion of the hot melt adhesive. The present application provides a spunbond bicomponent spinning assembly.

[0004] The technical scheme adopted by the present application to solve its technical problems is: a kind of spun-bonded bicomponent spinning assembly, including liquid inlet plate, diffusion plate, composite component and spinneret that are sequentially stacked, composite component is provided with composite unit group, the composite unit group is composed of several arrays of composite units, several spinneret orifices are arrayed on the spinneret, several spinneret orifices and composite units are one-to-one correspondingly arranged, the liquid inlet plate is used to deliver skin layer material and core layer material to diffusion plate respectively, the diffusion plate is used to diffuse and deliver skin layer material and core layer material to composite component respectively, the composite unit group is used to evenly spread skin layer material and core layer material and cover each composite unit, then each composite unit divides skin layer material into multiple strands and core layer material into a strand, and forms multiple strands of skin layer material arranged around core layer material, finally each composite unit converges multiple strands of skin layer material to core layer material to form skin-core structure, each composite unit is provided with fusion mechanism for fusing multiple strands of skin layer material with each other, and the spinneret orifice is used to stretch the skin-core structure formed by the corresponding composite unit.Compared with the prior art, the composite unit of the composite component of the present scheme evenly spreads skin layer material and core layer material and covers each composite unit, then each composite unit divides skin layer material into multiple strands and core layer material into a strand, and forms multiple strands of skin layer material arranged around core layer material, finally each composite unit converges multiple strands of skin layer material to core layer material to form skin-core structure, the present scheme adopts skin-core composite structure, the core layer material is polypropylene (PP), and the melting point is about 165 DEG C, the skin layer material is polyethylene (PE), and the melting point is about 130 DEG C, when hot rolling and melting, lower temperature is used to melt and bond skin layer, and the performance of core layer remains unchanged, when bonding with glue, the effect is good and the adhesion of glue is not damaged, can prevent composite delamination, without adding softening agent, slip agent, elastomer and other auxiliary agents, better hot melt property and softness are realized, safety is high, during storage, no auxiliary agent is precipitated, and the adhesion of hot melt adhesive is not affected, the assembly has reasonable design mechanism, good coating effect and other advantages, and has good market prospect.

[0005] In order to realize the composite assembly, preferably some embodiments, the composite assembly comprises composite plate one, composite plate two, composite plate three, composite plate four and composite plate five which are stacked in sequence, the composite plate one is located at one end of the composite assembly close to the diffusion plate, the composite unit group comprises a plurality of first flow channels and second flow channels arranged between the composite plate one and the composite plate two, a plurality of the first flow channels and the second flow channels are arranged in the transverse direction, a plurality of third flow channels and fourth flow channels are arranged between the composite plate two and the composite plate three, a plurality of the third flow channels and the fourth flow channels are arranged in the longitudinal direction, a plurality of the first flow channels and the third flow channels are communicated, a plurality of the second flow channels and the fourth flow channels are communicated, a plurality of groups of shunt grooves are arranged between the composite plate three and the composite plate four, each group of the shunt grooves is composed of a first groove and a second groove which are arranged at intervals, the first groove is used for shunting the skin layer material into a plurality of strands, the second groove is used for shunting the core layer material into one strand, the second groove is located between the first grooves, the first grooves in a plurality of groups of the shunt grooves are respectively communicated with the corresponding third flow channels, the second grooves in a plurality of groups of the shunt grooves are respectively communicated with the corresponding fourth flow channels, a plurality of groups of the flow converging grooves are arranged between the composite plate four and the composite plate five, the flow converging grooves are arranged corresponding to the shunt grooves, the flow converging grooves are used for converging the plurality of strands of the skin layer material shunted by the first grooves and wrapping the one strand of the core layer material shunted by the second groove to form a skin-core structure. By stacking the composite plate one, the composite plate two, the composite plate three, the composite plate four and the composite plate five in sequence to form the composite assembly, and then forming the composite unit group by the first flow channel, the second flow channel, the third flow channel, the fourth flow channel, the flow converging groove and the flow converging groove, the composite assembly is realized.

[0006] In order to better spread the skin layer material and the core layer material in the transverse direction, preferably some embodiments, the second flow channel is arranged between two adjacent first flow channels. By arranging the first flow channel between two adjacent first flow channels, the skin layer material and the core layer material are uniformly spread in the transverse direction on the whole assembly.

[0007] In order to better spread the skin layer material and the core layer material in the longitudinal direction, preferably some embodiments, the fourth flow channel is arranged between two adjacent third flow channels. By arranging the fourth flow channel between two adjacent third flow channels, the skin layer material and the core layer material are uniformly spread in the longitudinal direction on the whole assembly.

[0008] In order to realize the first groove, preferably some embodiments, the first groove comprises a first main flow channel and side flow channels arranged on both sides of the first main flow channel, the first main flow channel and the side flow channels are communicated with each other. By arranging the side flow channels on both sides of the first flow channel and forming the first groove by the communication between the first flow channel and the side flow channels, the structure is simple, and it is convenient to manufacture and maintain.

[0009] In order to realize the second groove, preferably some embodiments, the second groove comprises a second main flow channel. By forming the second groove by the second main flow channel, the structure is simple, and it is convenient to manufacture and maintain.

[0010] In order to realize the confluence groove, preferably some embodiments, the confluence groove is formed by the intermediate fusion zone and the confluence zone arranged around the intermediate fusion groove and interconnected, the number of confluence zones corresponds to the number of split into a plurality of skin materials, the fusion zone is provided with a composite hole, and the fusion mechanism is arranged in the confluence groove.

[0011] In order to realize the fusion mechanism, preferably some embodiments, the fusion mechanism is an island of elliptical structure. By arranging the fusion mechanism as an island of elliptical structure, the island plays a guiding role on the skin material, guiding a part of the adjacent two skin materials to be together and fused, improving the fusion between the plurality of skin materials, improving the adhesion between the skin materials, and improving the physical properties of the product.

[0012] In order to better fuse the skin material, preferably some embodiments, the long axis direction of the island is arranged along the confluence direction of the skin material. By keeping the long axis direction of the island consistent with the flow direction of the skin in the confluence zone, the skin material is better guided and fused, and the fusion and adhesion between the plurality of skin materials are ensured.

[0013] In order to reduce the stress concentration of the skin material adhesion, preferably some embodiments, a circular arc transition surface is arranged between the adjacent two confluence zones. By arranging the circular arc transition surface between the adjacent two confluence zones, the circular arc transition surface on the one hand improves the guiding of the skin material and ensures the fusion of the skin material, and at the same time the circular arc transition surface also eliminates the stress of the skin material between the adjacent two confluence zones.

[0014] The beneficial effects of the present application are: the spun-bonded bicomponent spinning assembly of the present application is used, the composite unit of the composite assembly uniformly spreads and covers the skin layer material and the core layer material of each composite unit, then each composite unit divides the skin layer material into multiple strands and the core layer material into one strand, and forms the multiple strands of skin layer material arranged around the core layer material, and finally each composite unit converges the multiple strands of skin layer material to the core layer material to form a skin-core structure, the present scheme adopts a skin-core composite structure, the core layer material is polypropylene (PP) with a melting point of about 165℃, and the skin layer material is polyethylene (PE) with a melting point of about 130℃, when hot rolling and melting, the skin layer material is fused and bonded at a lower temperature than the core layer, the performance of the core layer remains unchanged, the effect is good when bonded with glue and the adhesion of the glue is not damaged, the composite delamination is prevented, the better hot melt property and softness are achieved without adding softening agent, slip agent, elastomer and other auxiliary agents, the safety is high, no auxiliary agent is precipitated during storage, which does not affect the adhesion of hot melt adhesive, the assembly design mechanism is reasonable, the coating effect is good, and the like, has a good market prospect, avoids the problems that the existing spinning assembly has poor effect when bonded with glue and damages the adhesion of the glue, leading to composite delamination, so it is necessary to add softening agent, slip agent, elastomer and other auxiliary agents to achieve the required hot melt property and softness, and the safety is low, and at the same time, auxiliary agents are precipitated during storage, thereby affecting the adhesion of hot melt adhesive. BRIEF DESCRIPTION OF DRAWINGS

[0015] The present application is further illustrated below in combination with the drawings and examples.

[0016] Figure 1 is a three-dimensional structure schematic diagram of the present application;

[0017] Figure 2 is an exploded view of the present application;

[0018] Figure 3 is a top view of the present application;

[0019] Figure 4 is Figure 3 A-A sectional view in the present application;

[0020] Figure 5 is Figure 3 B-B sectional view in the present application;

[0021] Figure 6 is a three-dimensional structure schematic diagram of the liquid inlet plate in the present application;

[0022] Figure 7 is a three-dimensional structure schematic diagram of the diffusion plate in the present application Figure 1 ;

[0023] Figure 8 is a three-dimensional structure schematic diagram of the diffusion plate in the present application Figure 2 ;

[0024] Figure 9 is a three-dimensional structure diagram of the composite plate one in the present application Figure 1 ;

[0025] Figure 10 is a three-dimensional structure diagram of the composite plate one in the present application Figure 2 ;

[0026] Figure 11 is a three-dimensional structure diagram of the composite plate two in the present application Figure 1 ;

[0027] Figure 12 is a three-dimensional structure diagram of the composite plate two in the present application Figure 2 ;

[0028] Figure 13 is a top view of the composite plate three in the present application

[0029] Figure 14 is a top view of the composite plate four in the present application

[0030] Figure 15 is a bottom view of the composite plate four in the present application

[0031] Figure 16 is a structure diagram of the flow distribution groove in the present application

[0032] Figure 17 is a top view of the composite plate five in the present application

[0033] Figure 18 is a bottom view of the composite plate five in the present application

[0034] Figure 19 is a structure diagram of the flow collection groove in the present application

[0035] In the figure: 1, liquid inlet plate, 101, first liquid inlet, 102, second liquid inlet

[0036] 2, diffusion plate, 201, first diffusion hole, 202, second diffusion hole

[0037] 3, composite assembly, 301, composite plate one, 3011, first flow channel, 3012, second flow channel, 3013, first through hole, 3014, second through hole, 302, composite plate two, 3021, third flow channel, 3022, fourth flow channel, 3023, third through hole, 3024, fourth through hole, 303, composite plate three, 3031, fifth through hole, 3032, sixth through hole, 304, composite plate four, 3041, shunt groove, 3042, first groove, 3043, second groove, 3044, seventh through hole, 3045, eighth through hole, 305, composite plate five, 3051, confluence groove, 3052, fusion zone, 3053, confluence zone, 3054, composite hole, 306, island;

[0038] 4, spinneret, 401, spinneret hole;

[0039] 5, filter screen. DETAILED DESCRIPTION

[0040] The present application is further described below in conjunction with embodiments:

[0041] The present application is not limited to the following specific embodiments, and those skilled in the art can implement the present application in other various specific embodiments according to the disclosure of the present application, or any simple changes or modifications made by using the design structure and ideas of the present application, all fall within the scope of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0043] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] As shown in Figures 1-19 A kind of spunbond bicomponent spinning assembly, including liquid inlet plate 1, diffusion plate 2, composite component 3 and spinneret 4, liquid inlet plate 1, diffusion plate 2, composite component 3 and spinneret 4 are sequentially stacked, composite component 3 is provided with composite unit group, composite unit group is composed of several arrays of composite units, several spinneret holes 401 are arrayed on spinneret 4, several spinneret holes 401 and several composite units are set one by one, first liquid inlet 101 and second liquid inlet 102 are opened on liquid inlet plate 1, first liquid inlet 101 is used to deliver skin material to the corresponding area of diffusion plate 2, second liquid inlet 102 is used to deliver core material to the corresponding area of diffusion plate 2, filter screen 5 is arranged between liquid inlet plate 1 and diffusion plate 2, filter screen 5 is used to filter skin material and core material, several first diffusion holes 201 and second diffusion holes 202 are respectively opened on diffusion plate 2, first diffusion hole 201 and second diffusion hole 202 are both trumpet-shaped, first diffusion hole 201 is arranged between adjacent two second diffusion holes 202, one end of first diffusion hole 201 is arranged in the area of skin material, first diffusion hole 201 is used to diffuse and deliver skin material to the corresponding area of composite component 3, one end of second diffusion hole 202 is arranged in the area of core material, second diffusion hole 202 is used to diffuse and deliver core material to the corresponding area of composite component 3;

[0045] Composite component 3 includes composite plate one 301, composite plate two 302, composite plate three 303, composite plate four 304 and composite plate five 305, composite plate one 301, composite plate two 302, composite plate three 303, composite plate four 304 and composite plate five 305 are sequentially superimposed along diffusion plate 2 to spinneret 4, that is, composite plate one 301 is located at one end of composite component 3 close to diffusion plate 2, composite plate five 305 is located at one end of composite component 3 close to spinneret 4,

[0046] Composite unit group includes several first flow channels 3011, second flow channels 3012, third flow channels 3021, fourth flow channels 3022, shunt grooves 3041 and confluence grooves 3051,

[0047] The first flow channel 3011 and the second flow channel 3012 are arranged between the composite plate one 301 and the composite plate two 302, a plurality of the first flow channels 3011 and the second flow channels 3012 are arranged along the transverse direction, the second flow channel 3012 is arranged between two adjacent first flow channels 3011, the first flow channel 3011 and the second flow channel 3012 correspond to and communicate with the first through hole 3013 and the second through hole 3014 arranged on the composite plate one 301 in the transverse direction, the first through hole 3013 and the second through hole 3014 are arranged alternately, the first diffusion hole 201 corresponds to and communicates with the first through hole 3013, the second diffusion hole 202 corresponds to and communicates with the second through hole 3014,

[0048] The third flow channel 3021 and the fourth flow channel 3022 are arranged between the composite plate two 302 and the composite plate three 303, a plurality of the third flow channels 3021 and the fourth flow channels 3022 are arranged along the longitudinal direction, the fourth flow channel 3022 is arranged between two adjacent third flow channels 3021, the third flow channel 3021 and the fourth flow channel 3022 correspond to and communicate with the third through hole 3023 and the fourth through hole 3024 arranged on the composite plate two 302 in the longitudinal direction,

[0049] A plurality of groups of the sub-flow grooves 3041 are arranged between the composite plate three 303 and the composite plate four 304, each group of the sub-flow grooves 3041 is composed of the first groove 3042 and the second groove 3043 arranged alternately, the first groove 3042 is used for dividing the skin layer material into four streams in the embodiment, of course, the first groove 3042 can divide the skin layer material into two streams, three streams, five streams or more, the second groove 3043 is used for dividing the core layer material into one stream, the second groove 3043 is located between the first grooves 3042, the first groove 3042 includes the first main flow channel and the side flow channels arranged oppositely on both sides of the first main flow channel, the first main flow channel and the side flow channels communicate with each other through the branch flow channels, the second groove 3043 includes the second main flow channel, the seventh through hole 3044 is arranged at both ends of the side flow channel on the composite plate four 304, that is, there are four seventh through holes 3044 on both sides of the side flow channel, the eighth through hole 3045 is arranged at one end of the second main flow channel on the composite plate four 304, a plurality of the fifth through hole 3031 and the sixth through hole 3032 are arranged on the third composite plate, one end of the first main flow channel on the first groove 3042 communicates with the third flow channel 3021 through the fifth through hole 3031, one end of the second main flow channel on the second groove 3043 communicates with the fourth flow channel 3022 through the sixth through hole 3032,

[0050] A plurality of groups of confluence grooves 3051 are arranged between the composite plate four 304 and the composite plate five 305, the confluence grooves 3051 are arranged in correspondence with the distribution grooves 3041, the confluence grooves 3051 are used for converging the four strands of skin layer material distributed by the first grooves 3042 and wrapping the core layer material distributed by the second grooves 3043 to form a skin-core structure, the confluence grooves 3051 are formed by a middle fusion area 3052 and four confluence areas 3053 arranged around the middle fusion groove and in communication with each other, the confluence areas 3053 correspond to the number of the four strands of skin layer material, that is, the four seventh through holes 3044 correspond to the four confluence areas 3053, a circular arc transition surface is arranged between the adjacent two confluence areas 3053, a composite hole 3054 is arranged in the fusion area 3052, the composite hole 3054 is coaxially arranged with the eighth through hole 3045, and the spinning hole 401 on the spinneret plate 4 is arranged in correspondence with the composite hole 3054.

[0051] A fusion mechanism is arranged in the confluence groove 3051, the fusion mechanism is an island 306 with an elliptical structure, the long axis direction of the island 306 is arranged along the confluence direction of the skin layer material, and the island 306 is located between the seventh through hole 3044 and the eighth through hole 3045.

[0052] In use, the skin layer material and the core layer material are first conveyed to the filter screen 5 through the first liquid inlet 101 and the second liquid inlet 102 on the liquid inlet plate 1 for filtration, and then dispersed to the composite assembly 3 through the first diffusion hole 201 and the second diffusion hole 202 on the diffusion plate 2, uniformly spread and cover each composite unit through the composite unit group on the composite assembly 3, divided into a plurality of strands of skin layer material and one strand of core layer material through each composite unit, and arranged around the core layer material, and finally converged to the core layer material through each composite unit to form a skin-core structure, and each composite unit is provided with a fusion mechanism for fusing the plurality of strands of skin layer material, and the spinning hole 401 is used for stretching the skin-core structure formed by the corresponding composite unit.

[0053] The above ideal embodiments according to the present application are for illustration, and related personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents in the specification, and must be determined according to the scope of claims.

Claims

1. A spunbond bicomponent spinning pack characterized by: It includes liquid inlet plate (1), diffusion plate (2), composite assembly (3) and spinneret (4) arranged in sequence, the composite assembly (3) is provided with composite unit group, the composite unit group is composed of several array composite units, the spinneret (4) is provided with several spinneret holes (401) in array, several spinneret holes (401) and composite units are arranged one by one, the liquid inlet plate (1) is used to deliver skin layer material and core layer material to diffusion plate (2) respectively, the diffusion plate (2) is used to diffuse and deliver skin layer material and core layer material to composite assembly (3) respectively, the composite unit group is used to evenly spread skin layer material and core layer material and cover each composite unit, then each composite unit divides skin layer material into several strands and core layer material into one strand, and forms several strands of skin layer material around core layer material, finally each composite unit converges several strands of skin layer material to core layer material to form skin-core structure, each composite unit is provided with fusion mechanism for fusing several strands of skin layer material with each other, the spinneret hole (401) is used to stretch the skin-core structure formed by the corresponding composite unit; The composite assembly (3) comprises a composite plate one (301), a composite plate two (302), a composite plate three (303), a composite plate four (304) and a composite plate five (305) stacked in sequence, the composite plate one (301) is located at one end of the composite assembly (3) close to the diffusion plate (2), the composite unit group comprises a plurality of first flow channels (3011) and second flow channels (3012) arranged between the composite plate one (301) and the composite plate two (302), a plurality of the first flow channels (3011) and the second flow channels (3012) are arranged in the transverse direction, a plurality of third flow channels (3021) and fourth flow channels (3022) are arranged between the composite plate two (302) and the composite plate three (303), a plurality of the third flow channels (3021) and the fourth flow channels (3022) are arranged in the longitudinal direction, a plurality of the first flow channels (3011) and the third flow channels (3021) are communicated, a plurality of the second flow channels (3012) and the fourth flow channels (3022) are communicated, a plurality of groups of shunt grooves (3041) are arranged between the composite plate three (303) and the composite plate four (304), each group of the shunt grooves (3041) is composed of a first groove (3042) and a second groove (3043) arranged at intervals, the first groove (3042) is used for shunting the skin layer material into a plurality of strands, the second groove (3043) is used for dividing the core layer material into one strand, the second groove (3043) is located between the first grooves (3042), the first grooves (3042) in a plurality of groups of the shunt grooves (3041) are respectively communicated with the corresponding third flow channels (3021), the second grooves (3043) in a plurality of groups of the shunt grooves (3041) are respectively communicated with the corresponding fourth flow channels (3022), a plurality of groups of the shunt grooves (3041) are arranged between the composite plate four (304) and the composite plate five (305), the shunt grooves (3041) are correspondingly arranged with the shunt grooves (3041), the shunt grooves (3051) are used for converging the plurality of strands of the skin layer material shunted by the first grooves (3042) and wrapping the core layer material divided into one strand by the second grooves (3043) to form a skin-core structure.

2. A bi-component spun filament assembly according to claim 1 wherein: The second flow channel (3012) is arranged between two adjacent first flow channels (3011).

3. A bi-component spun filament assembly according to claim 1 wherein: The fourth flow channel (3022) is arranged between two adjacent third flow channels (3021).

4. A bi-component spun filament assembly according to claim 1 wherein: The first groove (3042) comprises a first main flow channel and side flow channels oppositely arranged on both sides of the first main flow channel, and the first main flow channel and the side flow channels are communicated with each other.

5. A bi-component spun filament assembly as claimed in claim 1, wherein: The second groove (3043) comprises a second main flow channel.

6. A bi-component spun filament assembly according to any one of claims 1 to 5, wherein: The shunt groove (3051) is formed by a middle fusion area (3052) and shunt areas (3053) arranged around the middle fusion area and communicated with each other, the shunt areas (3053) correspond to the number of the plurality of strands of the skin layer material, the middle fusion area (3052) is provided with a composite hole (3054), and the fusion mechanism is arranged in the shunt groove (3051).

7. A bi-component spun filament assembly according to claim 6 wherein: The fusion mechanism is an island (306) in an elliptical structure.

8. A bi-component spun filament assembly according to claim 7 wherein: The long axis direction of the island (306) is arranged along the convergence direction of the skin material.

9. A bi-component spun filament assembly according to claim 8 wherein: An arc transition surface is arranged between two adjacent convergence areas (3053).

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