JP2000248448A - Production of jacquard knit fabric in circular knitting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a uniform pile jacquard knit fabric capable of generating no irregularities in forming pile loops. SOLUTION: This production of jacquard knit fabric in a circular knitting machine is to tighten a pile needle loop on a lower sinker nose surface (5c) by forward movement of the sinker toward the inside during shifting from a last region to a first region (X), subsequently move the sinker backward toward the outside to drop a loosened pile needle loop on the sinker nose (5e) and tighten the dropped pile needle loop on the sinker nose (5e) by forward movement of the sinker toward the inside. It is preferable to move the sinker toward the inside and outside in 1.5-3 mm for tightening the pile needle loop.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a jacquard knitted fabric in a circular knitting machine, and more particularly, to a jacquard knitted fabric in a circular knitting machine disclosed in Japanese Patent No. 2791774 (Japanese Patent Laid-Open No. 1-250450) of the present applicant. Of the present invention is an improved invention.

[0002]

2. Description of the Related Art According to Japanese Patent No. 2791774 of the present applicant, there is provided a method of manufacturing a jacquard knitted fabric in a circular knitting machine using a sinker, wherein at least one first area for supplying a ground yarn is provided. After all the knitting needles have received the supply of the ground yarn raised to the knitting position, the old loop that is about to escape from the needle hook portion is shifted to the welt position where the old loop is held at the front portion of the needle hook.

[0003] Next, in at least one second area for supplying the first pile yarn, a tack or a welt is selected at the first needle selection position, and the knitting needle selected for the tack is supplied to the first pile yarn. After receiving this, the tip of the needle hook is lowered slightly from the lower sinker nose surface, while the knitting needle selected as the welt maintains the welt state in the area where the ground yarn is supplied.

[0004] Next, in at least one third region for supplying the second pile yarn, a tack or a welt is selected at a second needle selection position, and the knitting needle which maintains the welt state is selected as a tack here. When the needle is raised and the first pile yarn is extruded to the center of the needle hook by the upper sinker throat portion and the floated yarn of the first pile yarn is turned to the back of the knitting needle, the second pile yarn is supplied. On the other hand, the knitting needle receiving the supply of the first pile yarn keeps the state in the area where the first pile yarn is supplied, and thereafter, all the knitting needles descend, so that the first and second knitting needles are lowered on the lower sinker nose surface.
The second pile yarn is suspended at the required length of the ground yarn on the sinker knitting face, and clears the old loop so that the first and second yarns are completed during one course.
It is characterized in that piles are formed continuously.

[0005]

In the above-described prior art, the pile needle loop fastened on the lower sinker nose surface by the inward advance of the sinker is set on the sinker nose (5e) by the outward retreat of the sinker. The pile needle loop that has fallen is in a free state, and the pile loop is irregular.

An object of the present invention is to obtain a uniform pile jacquard knitted fabric which is free from irregularities during formation of a pile loop.

[0007]

According to a first aspect, the present invention, which achieves the above object, is a circular knitting machine that uses a sinker, and includes at least one first knitting machine for supplying a ground yarn. In one area, after all the knitting needles receive the supply of the ground yarn raised to the knitting position, the old loop, which is about to escape from the needle hook portion, is shifted to the welt position where the old loop is held at the front portion of the needle hook, and the first pile yarn is moved. In at least one second area for supplying the staple, a tack or a welt is selected at the first needle selecting position, and the knitting needle selected for the tack is supplied with the first pile yarn, and then the lower sinker nose surface is supplied. The knitting needle selected as a welt is maintained in a welt state in the first area to which the ground yarn is supplied, and the second pile yarn is supplied. In at least one third region that, by needle selection tack or welt in the second needle selection position,
The knitting needle maintaining the welt state is selected as a tack at this time, and when it rises, the first pile yarn is extruded to the center of the needle hook at the upper sinker throat portion and the floated yarn of the first pile yarn is placed on the back of the knitting needle. After the second pile yarn is supplied, the knitting needles supplied with the first pile yarns maintain the state in the region where the first pile yarns are supplied, and thereafter all the knitting needles are supplied. As a result, the first and second pile yarns are suspended on the lower sinker nose surface by the required length of the ground yarn on the sinker knitting face surface, and by clearing the old loop, the first and second pile yarns are suspended during the first course. , A method for manufacturing a jacquard knitted fabric in which a second pile is continuously formed, while the sinker is advanced inward during the transition from the final area to the first area. After tightening the sinker nose on the lower sinker nose surface, the sinker is retracted outward to drop the slackened pile needle loop onto the sinker nose, and the sinker is advanced again inward to drop the pile needle loop onto the sinker nose. And the pile needle loop is tightened.

[0008] According to a second aspect, the present invention is a circular knitting machine using a sinker, wherein a ground yarn and a first knitting machine are used.
After all the knitting needles have been moved up in at least one first region for supplying the pile yarn, a knit or a welt is selected at the first needle selection position, and the knitting needle selected for the welt receives the supply of the ground yarn. The old loop just before escape from the knitting needle hook is held at the front of the needle hook, while the knitting needle selected for the knit receives the supply of the ground yarn and the first pile yarn and lowers the first pile yarn to the lower sinker. After being supported on the nose surface, the tip of the needle hook is slightly lowered from the lower sinker nose surface to a point slightly protruding from the lower sinker nose surface. The knitting needle of the welt is selected on the tack, and when the knitting needle is lifted, the first pile yarn is pushed out to the center of the needle hook by the upper sinker throat portion to flow the first pile yarn. After an operation of turning the bets yarn on the back of the knitting needle supplied with yarn second pile, while the first
The knitting needle which has been supplied with the pile yarn keeps the state in the first region where the first pile yarn has been supplied without receiving the supply of the second pile yarn, and thereafter, all the knitting needles descend, thereby causing the lower sinker nose surface to move. The first and second pile yarns are suspended on the knitting face surface by the required lengths of the ground yarns, respectively.
Then, in the method for manufacturing a jacquard knitted fabric in which the first and second pile yarns are continuously formed in one course by clearing the old loop, the inner side of the sinker is moved while shifting from the final area to the first area. After tightening the pile needle loop at the lower sinker nose surface by moving forward, the sinker is retracted outward, the loosened pile needle loop is dropped onto the sinker nose, and the sinker is advanced forward again and the pile needle is dropped. The loop is configured to tighten a pile needle loop on the sinker nose.

[0009]

According to the method of manufacturing a jacquard knitted fabric according to the present invention, the pile needle loop is tightened on the lower sinker nose surface by advancing inward of the sinker, and then the sinker is retracted outward to remove the slackened pile needle loop. By dropping the pile needle loop on the nose and advancing the sinker inward again and tightening the pile needle loop on the sinker nose, an uneven pile loop can be eliminated.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is an operation locus diagram of a cylinder needle and a sinker schematically showing a part of a knitting process according to an embodiment of the present invention in an unfolded manner, and FIGS.
It is knitting explanatory drawing which showed -2 cross section-14-14 cross section.

In FIG. 1, solid lines (1, 2) show the movement trajectory of the hook tip of the knitting needle (3). The thin line (4) indicates the sinker top or the knitting face (5a) of the sinker (5), and the two-dot chain line (6) indicates the movement locus of the sinker throat (5b). (7) is a ground yarn having a ground structure, and (8) and (9) are pile yarns on which a pile is knitted. These yarns are indicated by dotted lines provided in the respective regions. The yarn carriers (10, 11, 12)
The knitting needle (3) is supplied to the knitting needle (3).

The above-described knitting operation will be described, for example, for knitting of a two-color pile jacquard.

In the first region (X), after all the knitting needles (3) have been raised to the knit position, the yarn carrier (1)
0) supplies the ground thread (7). The yarn carrier (10) supplies the ground yarn from above, but it is also possible to supply the ground yarn from below as shown in a second embodiment described later.

The supplied ground yarn (7) is captured by the needle hook (3a) as shown in FIGS. 2A and 2B (section 2-2) as the knitting needle (3) descends. At this time, the sinker (5) starts to retreat outward.

When the knitting needle (3) continues to descend, FIG.
B (3-3 section), the old loop ground needle loop (7a) and the pile needle loop (9
a) slides up on the stem (3c), thereby rotating the latch (3b) upward and closing the hook (3a). At this time, the sinker (5) retreats outward most.

Further, when the knitting needle (3) descends, it reaches the welt position shown by the solid line (1) and
Old loop (7a, 9a) as shown in -4 section)
Does not clear from the front of the needle hook, but places the old loop at the front of the needle hook.

The knitting needle (3) keeps its state,
Move to area (Y). At this time, the retracted sinker (5) advances inward to position the ground thread (7) in the needle hook portion in the sinker throat (5b).

In the second area (Y), at the first needle selection position (A), tack or welt needle selection is performed.
The knitting needle (3) whose tack is selected is latched (3) by the ground thread (7) in the needle hook as the knitting needle rises.
b) is released, and the old loop at the front of the needle hook is turned to the back of the latch.
As shown in (-5 section), the supplied pile yarn (8) is captured by the needle hook portion (3a).

When the knitting needle (3) continues to descend, FIG.
As shown in (6-6 cross section), the lower sinker nose surface (5
c) The hook tip is lowered to the extent that the tip of the hook slightly comes out, that is, the position shown by the solid line (2). At this time, the latch (3
The hook is closed by b) being lifted by the old loop (7a, 9a), and the ground thread (7) and the pile thread (8) are held in the needle hook. As a result, the pile yarn (8) is moved to the lower sinker nose surface (5c).
Then, the state shifts to the third area (Z) while maintaining this state.

In the third area (Z), tack or welt needle selection is performed at the second needle selection position (B).
The knitting needle (3) for which the tack selection has been performed at the first needle selection position (A) is selected as a welt at the second needle selection position (B),
FIGS. 7A (7-7 section) and FIGS. 8A (8-8) show the state shown in FIG. 6A (section 6-6), that is, the state in which the ground thread (7) and the pile thread (8) are held in the needle hook. cross section)
, And the state shifts while maintaining the state. During this time, the sinker (5) is advanced slightly inward as shown in FIG. 7A (cross section 7-7), and then immediately returned outward.

When the knitting needle (3) continues to move, FIG. 9A
As shown in (9-9 section), as the knitting needle (3) descends, the pile yarn (8) supported on the lower sinker nose surface (5c) is pulled down. Further, as the knitting needle (3) is guided to the lowest position, the old loop (7a, 9a) clears from the hook portion as shown in FIG. 10A (10-10 section), and at this time, the lower sinker nose surface (5
c) are pulled down together with the pile yarn (8) supported by the knitting face (5a) and the ground yarn (7b) supported by the knitting face (5a). Is suspended.

As all the knitting needles (3) rise slightly, as shown in FIG. 11A (section 11-11), the ground needle loop (7b) and the pile needle loop ( 8b) is tightened.

The knitting needle (3) moves again to the first area (X), and as all the knitting needles (3) rise, the knitting needle (3) moves upward as shown in FIG.
As shown in FIG. 2A (section 12-12), the ground needle loop (7b) and the pile needle loop (8b) in the needle hook come off the tip of the latch and slide down the stem (3c). At this time, the sinker (5) retreats slightly outward to drop the pile needle loop (8b) supported by the lower sinker nose surface (5c) onto the nose (5e).

When the knitting needle (3) reaches the knit position, FIG.
As shown in A (13-13 section), the pile needle loop (8b), which is a characteristic part of the present invention and has fallen on the nose (5e) described above, is again advanced inward with the sinker (5). By tightening the pile loop, a uniform pile needle loop is formed.

After the knitting needle (3) has reached the knit position, FIG.
As shown in FIG. 4A (section 14-14), as the knitting needle (3) descends, the needle loop of the stem (3c) is turned to the back of the latch (3b), and the thread of the ground thread (7) is supplied.

On the other hand, the knitting needle (3) in which the welt selection has been performed at the first needle selection position (A) is in the state shown in FIG. 4B (section 4-4), that is, the old loop (7a, 9a). Fig. 5B (5-5 section)
The state shown in FIG. 6B (section 6-6) and the state continues, and the state is shifted to the third area (Z) without receiving the supply of the first pile yarn (8).

In the third area (Z), the knitting needle (3) for which the welt selection has been performed at the first needle selection position (A) is the second knitting needle.
At the needle selection position (B), the needle selection of the tack is performed. With the knitting needle (3) selected for tacking, the knitting needle (3) ascends as shown in FIG. 7B (7-7 cross section) while the old loop is held at the front of the needle hook.

During this time, the sinker (5) is advanced slightly inward, the upper sinker throat (5d) is positioned at the center of the needle hook, and the floated yarn of the pile yarn (8) is turned to the back of the needle. Is carried out and returned immediately.
Then, after the knitting needle (3) moves up to the tack position, as the knitting needle (3) moves down, the thread of the pile yarn (9) supplied is captured as shown in FIG. 8B (8-8 section).

Further, with the lowering of the knitting needle (3), FIG.
As shown in B (9-9 section), the pile yarn (9) supported on the lower sinker nose surface (5c) is pulled down,
As shown in FIG. 10B (10-10 section), the knitting needle (3) is further guided to the lowest position to clear the old loop, and the pile yarn (9) supported on the lower sinker nose surface (5c) and the nip The ground needle loop (7b) and the pile needle loop (9b) of a required length are suspended by being pulled down together with the ground thread (7) supported by the toing face (5a).

As the knitting needle (3) rises slightly, as shown in FIG. 11B (section 11-11), the sinker (5) advances inward and the ground needle loop (7) moves forward.
b) and the pile needle loop (9b) are tightened.

The knitting needle (3) moves again to the first region (X), and as all the knitting needles (3) rise, the knitting needle (3) moves upward as shown in FIG.
As shown in FIG. 2B (section 12-12), the ground needle loop (7b) and the pile needle loop (9b) in the needle hook come off the tip of the latch and slide down the stem (3c). At this time, the sinker (5) retreats slightly outward to drop the pile needle loop (9b) supported by the lower sinker nose surface (5c) onto the nose (5e).

When the knitting needle (3) reaches the knitting position, FIG.
As shown in B (13-13 section), the pile needle loop (9b), which is a characteristic part of the present invention, has fallen on the nose (5e), and the sinker (5) is again advanced inward to make a pile loop. , A uniform pile needle loop is formed.

The inward and outward movement of the sinker for tightening the pile needle loop twice is 1.5 to
It is preferably 3 mm.

After the knitting needle (3) has reached the knitting position, FIG.
As shown in FIG. 4A (section 14-14), as the knitting needle (3) descends, the needle loop of the stem (3c) is turned to the back of the latch (3b), and the thread of the ground thread (7) is supplied.

In this way, a pile structure in which the pile loop of the pile yarn (8) and the pile loop of the pile yarn (9) are continuous in one course is formed, and this is repeated.

FIG. 15 is an operation locus diagram of a cylinder needle and a sinker schematically showing a part of the knitting process according to the second embodiment of the present invention in a developed manner. The second embodiment is different from the first embodiment in that after all the knitting needles (3) are raised in the first area (XY1), the knitting needles (3) are transferred to knitting (pile) or to needle selection. The first needle selection mechanism (A1) is provided, and the yarn is supplied from the pile (108) from above, while the ground yarn (10
7) is to feed yarn from below.

In FIG. 15, solid lines (101, 102)
Shows the movement trajectory of the hook tip of the knitting needle (3). The thin line (104) indicates the sinker top or knitting face (5a) of the sinker (5), and is indicated by a two-dot chain line (10).
6) shows an operation locus of the sinker throat (5b). (107) is the ground thread of the ground organization, (108),
(109) is a pile yarn on which the pile is knitted. These yarns are supplied to the knitting needle (3) by the yarn carriers (110), (112) and the like provided in the respective regions and indicated by dotted lines.

The above-described knitting operation will be described for a two-color pile jacquard as in the first embodiment. The knitting operation is almost the same as that proposed in Japanese Patent No. 2717974 of the applicant of the present invention. In the description of the state, only the outline of the state and the description of the improved part will be omitted, and other details will be omitted by specifying the document title (column 8, line 6 to column 11, of the same patent specification). 1 line).

In the first area (XY1), after all the knitting needles (3) have risen, the knitting needles (3) on which the welt selection has been performed at the first needle selection position (A1) are lowered. The bottom of the yarn carrier (110) allows the ground thread (1
07) is supplied. Subsequently, at the second needle selection position (B1) in the second area (Z1), the knitting needle (3) for which the welt selection has been performed at the first needle selection position (A1) is selected at the tack indicated by the solid line (101). It is needled and a pile yarn (109) is supplied.

The knitting needle (3) for which knitting (pile) has been selected at the first needle selection position (A1) is supplied with the ground thread (107) and the pile (108) as it descends. Subsequently, the second needle selection position (B) of the second area (Z1)
In 1), the knitting needle (3) for which knitting (pile) has been selected at the first needle selection position (A1) is selected as a welt indicated by a solid line (102), and the pile yarn (109) is not supplied. It has become.

When the knitting needle (3) reaches the knit position, FIG.
As shown in (16-16 section), this is a feature of the present invention, and the pile needle loop (108b) that has fallen on the nose (5e) is again advanced inward with the sinker (5). To form a uniform pile needle loop.

The inward and outward movement of the sinker for tightening the pile needle loop twice is 1.5 to
It is preferably 3 mm.

The knitting method of the present invention is not limited to the above embodiment. Various modifications, improvements, and changes are possible within the scope of the claims. For example, in the first embodiment, the first needle selection position (A)
In the second embodiment, after all the knitting needles (3) have risen, the tack or the weld is selected at the second needle selection position (B1) by increasing the second area (Y) in which the tack or the welt needle selection is performed. By increasing the second area (Z1) in which needle selection is performed, the present invention can be applied to knitting of pile jacquard fabrics of three colors, four colors, etc. in one course.

[0045]

According to the present invention, the pile needle loop is tightened on the lower sinker nose surface by advancing the sinker inward, and then the sinker is retracted outward to drop the relaxed pile needle loop onto the sinker nose. The uniform pile loop can be obtained by tightening the pile needle loop on the sinker nose by dropping the pile needle loop forward by moving the sinker inward again.

[Brief description of the drawings]

FIG. 1 is a knitting method of a two-color pile jacquard according to a first embodiment of the present invention, and is an operation trajectory diagram of a cylinder needle and a sinker schematically showing a part of a knitting process developed.

FIG. 2 is a knitting explanatory view showing a 2-2 section in FIG. 1;

FIG. 3 is a knitting explanatory view showing a section 3-3 in FIG. 1;

FIG. 4 is a knitting explanatory view showing a section 4-4 in FIG. 1;

FIG. 5 is a knitting explanatory view showing a 5-5 cross section in FIG. 1;

FIG. 6 is a knitting explanatory view showing a section taken along line 6-6 in FIG. 1;

FIG. 7 is a knitting explanatory view showing a 7-7 section in FIG. 1;

8 is a knitting explanatory view showing an 8-8 cross section in FIG. 1. FIG.

FIG. 9 is a knitting explanatory view showing a 9-9 section in FIG. 1;

FIG. 10 is a knitting explanatory view showing a 10-10 cross section in FIG. 1;

FIG. 11 is a knitting explanatory view showing a section 11-11 in FIG. 1;

FIG. 12 is a knitting explanatory view showing a 12-12 section in FIG. 1;

FIG. 13 is a knitting explanatory view showing a section taken along line 13-13 in FIG. 1;

FIG. 14 is a knitting explanatory view showing a section taken along line 14-14 in FIG. 1;

FIG. 15 is an operation locus diagram of a cylinder needle and a sinker schematically showing a part of the knitting process in an exploded manner in the method for knitting a two-color pile jacquard according to the second embodiment of the present invention.

16 is a knitting explanatory view showing a section taken along line 16-16 in FIG.

[Explanation of symbols]

3. . . Knitting needle 5. . . Sinker (first embodiment) 1,2. . . 3. Motion trace of hook tip . . 5. Movement trajectory of the sinker top or knitting face . . 6. Motion trajectory of sinker throat . . Ground yarn of ground organization 8,9. . . The pile yarn from which the pile is knitted 10, 11, 12. . . Yarn carrier X. . . First area Y. . . Second region Z. . . Third region (second embodiment) 101, 102. . . Motion locus of hook tip 104. . . Movement trajectory of the sinker top or knitting face 106. . . Movement trajectory of sinker throat 107. . . Ground yarn of ground organization 108,109. . . The pile yarns 110, 111, 112. . . Yarn carrier XY1. . . First area Z1. . . Second area

Claims (4)

[Claims] 1. A circular knitting machine using a sinker, wherein in at least one first region (X) for supplying a ground yarn (7), all the knitting needles are raised to a knit position. 7) After receiving the supply, the needle hook part (3)
The old loop, which is about to escape from a), is shifted to the welt position where it is held at the front of the needle hook, and the first needle position is selected in at least one second area (Y) for supplying the first pile yarn (8). In (A), a tack or a welt is selected, and the knitting needle selected in the tack is supplied with the first pile yarn (8), and then the tip of the needle hook slightly comes out from the lower sinker nose surface (5c). The knitting needle selected as a welt is maintained in the first region (X) to which the ground yarn (7) is supplied, and at least one knitting needle is supplied to supply the second pile yarn (9). In the third region (Z), a tack or a welt is selected at the second stapling position (B), and the knitting needle maintaining the welt state is selected as a tack here, and the knitting needle is moved to the first position when the stitch is raised. Pile thread (8) upper Nkasuroto portion after the yarn float of the first pile yarn is extruded to the needle hook central performs an operation to turn on the back of the knitting needles (5d), yarn second pile (9)
The knitting needle which has been supplied with the first pile yarn (8) keeps the state in the area where the first pile yarn has been supplied, and thereafter all the knitting needles descend, so that the lower sinker nose surface is lowered. In (5c), the first and second pile yarns are suspended by the required lengths of the ground yarns on the sinker knitting face surface (5a), and the first and second pile yarns are cleared during the first course by clearing the old loop. In the method for manufacturing a jacquard knitted fabric for continuously forming piles, while shifting from the final area to the first area (X), the pile needle loop is tightened by the lower sinker nose surface (5c) by advancing inward of the sinker. After that, the sinker is retracted outward, the relaxed pile needle loop is dropped on the sinker nose (5e), and the sinker is advanced forward again to drop the pie. A method for manufacturing a jacquard knitted fabric in a circular knitting machine, wherein a pile needle loop is tightened on a sinker nose (5e) with a needle loop. 2. The inward and outward movement of the sinker for tightening the pile needle loop twice is 1.5 times.
2. The method of claim 1, wherein the distance is between about 3 mm. 3. A circular knitting machine using a sinker, wherein all knitting needles are provided in at least one first region (XY1) for supplying a ground yarn (107) and a first pile yarn (108). After ascending, a knit or a welt is selected at the first needle selection position (A1), and the knitting needle selected by the welt is about to escape from the knitting needle hook (3a) after receiving the supply of the ground thread (107). Is held at the front of the needle hook, while the knitting needle selected as a knit receives the supply of the ground yarn (107) and the first pile yarn (108) and places the first pile yarn on the lower sinker nose surface ( 5c), the tip of the needle hook is slightly lowered from the lower sinker nose surface (5c) so as to protrude slightly, and at least one second area (Z) for supplying the second pile yarn is provided.
In 1), the tack or the welt is selected at the second needle selection position, and the knitting needle of the welt is selected by the tack, and when the needle is raised, the first pile yarn (108) is hooked by the needle at the upper sinker throat (5d). After the operation of extruding the float of the first pile yarn (108) to the center and turning the float yarn to the back of the knitting needle is performed, the supply of the second pile yarn (109) is performed, while the operation of the first pile yarn (108) is performed. The supplied knitting needles keep the state in the first area (XY1) where the first pile yarn (108) is supplied without receiving the supply of the second pile yarn (109), and thereafter all the knitting needles descend. The first and second pile yarns on the lower sinker nose surface (5c) and the ground yarn (1) on the knitting face surface (5a).
07), respectively, by suspending the required length and clearing the old loop, so that the first and second
In the method for manufacturing a jacquard knitted fabric in which pile yarns are continuously formed, during the transition from the final region to the first region (XY1), the pile needle loop is advanced by the inward movement of the sinker on the lower sinker nose surface (5c). After tightening, the sinker is retracted outward to drop the relaxed pile needle loop onto the sinker nose (5e), and the sinker is advanced again inward to drop the pile needle loop onto the sinker nose (5e). A method of manufacturing a jacquard knitted fabric in a circular knitting machine, wherein the pile needle loop is tightened by the method described above. 4. The inward and outward movement of the sinker for tightening the pile needle loop twice is 1.5 times.
4. The method according to claim 3, wherein the distance is about 3 mm.