WO1998021973A1 - Collagen casing and apparatus for manufacturing the same - Google Patents

Abstract

A collagen casing for sausage having a structure similar to that of the intestine and a process for manufacturing the same. The casing is prepared from a first collagen dispersion and a second collagen dispersion, and the first collagen dispersion constitutes a first oriented face and second oriented face, while the second collagen dispersion constitutes a third oriented face disposed on the second oriented face.

Description

 Description Collagen casing and its manufacturing equipment

 The present invention relates to a collagen casing having a three-layer structure for forming sausages and an apparatus for producing the same. Background art

 At present, there are two types of edible sausage casings, mainly natural intestine and collagen casings. In the former, the film is thin, has no orientation and high strength, the sausage link can be made small, and the sausage is appropriately curved and finished well, and can be easily cut or broken even during cooking. It has never been used, and it has been popular for a long time because of its crispness and texture when eaten. On the other hand, the latter collagen casing has good stability in length, size or supply, good hygiene, storability, or suitability for high-speed filling, etc. Despite the problems, it has become widely used in recent decades, forming a market alongside natural gut.

 In recent years, consumers have become more and more focused on natural products, and the same is true of sausages.In terms of crispness, shape, texture, and other aspects, collagen-caused sausages also have a natural intestine. The same effect as that obtained by using collagen has been required, and some proposals have been made for obtaining sausages using a collagen casing.

For example, Japanese Examined Patent Publication No. Sho 64-5 describes an edible artificial sausage casing using collagen. It is assumed that. Japanese Patent Publication No. 57-442495 and Japanese Patent Publication No. Hei 5-304020 disclose a curved casing composed of a regenerated cell mouth, and Japanese Patent Publication No. 58-230210. And Japanese Patent Publication No. 57-75555565 describe a curved casing made of a plastic film. When these casings are filled with sausage emulsion, the degree of curvature is almost the same but has an advantage.

 Further, Japanese Patent Application Laid-Open No. 1-94841 discloses a conventional casing filled with sausage marjon, which is wound around a round bar, cooked and cut.

 As described above, some proposals have been made to obtain sausages using collagen casing. However, the casing described in Japanese Patent Publication No. 64-5 / 1988 has a curved shape of sausage. The thickness of the coating is so thick that it remains unpleasant in the mouth when eaten, and in order to improve this texture, if the coating is made thinner, the curved shape is almost invisible. There is a problem that it grows to the extent. Further, this collagen casing manufacturing method has a problem that an extremely large apparatus is required because it is necessary to maintain a spiral shape from discharge to drying. In addition, Japanese Patent Publication No. 57-442495 and Japanese Patent Publication No. 5-304020, furthermore, Japanese Patent Publication No. 58-23210 and Japanese Patent Publication No. 57-55 The invention described in Patent Publication No. 565 has a problem that when these casings are filled with sausage margin, they are non-edible. Further, the invention described in Japanese Patent Application Laid-Open No. Hei 11-96461 has a problem in that the shape is a donut shape, and the cut is large and an unnatural form is provided.

In addition, in the conventional collagen casing, since the collagen dispersion is pushed out from the nozzle when the collagen casing is formed, the orientation exists as described above. Therefore, the problem of rupture of the collagen casing during sausage molding is caused. Was left. Therefore, if the number of rotations of the nozzle that pushes out the collagen dispersion liquid is increased in order to solve the problem of rupture, the problem of rupture is solved, but the collagen casing extends in the vertical direction during sausage molding, and the so-called streamline There was a problem of molding shoulder sausage. In order to solve this problem and form a sausage with a shoulder similar to a sausage using natural intestine, if the rotation speed of the nozzle that pushes out the collagen dispersion liquid is reduced, vertical cracks will occur on the contrary. There was a problem. Disclosure of the invention Therefore, the present invention provides a collagen casing which solves the problems of these known collagen casings and an apparatus for producing the same.

 In order to solve the above-mentioned problems, the present invention makes it possible to perform linearly from discharge to drying, to make it possible to use a normal wrinkling machine to form a sheared strand, and from sausage emulsion filling to cooking. From the same nozzle to obtain a curved sausage as desired during the cooking process and to provide a texture similar to that of a normal linear collagen casing. A two-layer structure is obtained by twisting the inner and outer surfaces of each collagen fiber to form a two-layer structure.Furthermore, collagen fibers supplied from another nozzle are provided thereon, and a collagen casing consisting of three layers in total is provided. Is what you do. Depending on how this third layer is supplied, it is possible to create a safety structure in which the entire surrounding area is completely three layers, or if you want a curved sausage like when using natural intestine When the third layer is viewed in a cross section cut in a direction perpendicular to the longitudinal direction of the collagen casing, the collagen fiber has a thickness increasing at least at one point of the collagen casing. Are oriented substantially parallel to the longitudinal direction of the collagen casing. BRIEF DESCRIPTION OF THE FIGURES

 FIG. 1 is a schematic view of a nozzle according to a first embodiment of the present invention as viewed from the front. FIG. 2 is a schematic diagram of a cross section taken along line 2-2 in FIG.

 FIG. 3 is a cross-sectional view of a collagen casing obtained when the discharge port 108 has one concave portion.

 FIG. 4 is a cross-sectional view of the collagen casing obtained when the discharge port 108 has two concave portions.

 FIG. 5 is a diagram showing a state in which the collagen casing of FIG. 3 is crumpled to form a shear strand.

 FIG. 6 is a diagram showing sausages obtained from the casing of FIG.

FIG. 7 is a schematic view of a nozzle according to a second embodiment of the present invention as viewed from the front. FIG. 8 is a schematic cross-sectional view taken along line 8-8 in FIG. FIG. 9 is a schematic diagram showing a cross section of a nozzle according to the third embodiment of the present invention.

 FIG. 10 is a schematic diagram showing a cross section of a nozzle according to a fourth embodiment of the present invention. FIG. 11 is a schematic diagram showing a cross section of a nozzle according to a fifth embodiment of the present invention. FIG. 12 is a schematic view of a nozzle according to a sixth embodiment of the present invention as viewed from the front. FIG. 13 is a schematic cross-sectional view taken along line 13-13 of FIG. 12. BEST MODE FOR CARRYING OUT THE INVENTION

 1 to 6 disclose a collagen casing manufacturing apparatus for forming a curved sausage, a collagen casing, and a sausage formed using the collagen casing. FIGS. 7 to 11 disclose an apparatus for producing a collagen casing for forming sausages in a very stable form that is not curved but has a linear form. Further, FIGS. 12 and 13 disclose an apparatus for manufacturing a collagen casing for forming a curved sausage by modifying the apparatus shown in FIGS. This is described in detail below.

 FIG. 1 is a front view of a nozzle 100 for discharging and forming a collagen dispersion liquid according to a first embodiment of the present invention, and FIG. 2 is a sectional view taken along line 2-2 in FIG. In these figures, the first liquid of the collagen dispersion liquid, which is a raw material for collagen casing, is supplied from a flow path 101, and is supplied between an inner cylinder 103 and an outer cylinder 104 that rotate in opposite directions. Through an annular passage 106 directed from the outside in the radial direction to the inside in the radial direction, and then to a tip exit 110 directed forward in parallel with the axial direction. During this time, the collagen fibers are oriented to have two orientation planes along the direction of rotation of each cylinder. Here, the flow passage 101 has a large number of openings around the housing 105 arranged outside the outer cylinder 104 so as to surround the outer cylinder 104, and a plurality of openings around the outer cylinder 104. It is formed by a large number of openings and a passage formed in the distal end surface of the inner cylinder 103.

As shown in the figure, the outermost wall 107 of the outer cylinder 104 is shaved off the outer wall in the radial direction, that is, the wall thickness is extremely thinner than other parts by skiving. Oval or water-drop shaped open end 1 1 1 of non-rotating housing 105 A discharge port 108 is disposed so as to cover the foremost end 107 of the outer cylinder, and a supply port 102 provided at a tip end of the housing 105 and a discharge port 108 are provided. The second liquid of the collagen dispersion is supplied toward. The two orientations are gently and surely agitated so that the interface between the first and second collagen dispersions is not generated by the rotation of the extremely thin wall of the foremost part 107. Discharge while covering the outer surface of the tubular first collagen dispersion having a surface and forming a third orientation surface 202 by the orientation of collagen fibers parallel to the ejection direction of the first collagen dispersion. Then, it is supplied to a coagulation bath such as a saturated aqueous solution of neutral salt and coagulated and molded in the bath to form a solidified collagen casing 200. The hole 109 in the center of the inner cylinder 103 communicates with the coagulation bath, and a neutral salt saturated aqueous solution communicates inside.

 If the tip portion 107 is not particularly thinner than the nozzle portion other than the portion constituting the tip portion 107, the water-drop-shaped open end 1 1 1 1 Also, by arranging the inner cylinder 103 so as to extend further forward from the front surface of the distal end portion of the inner cylinder 103 in the discharge direction, there is an effect of eliminating or reducing the boundary surface.

Further, the third orientation surface 202 of the second collagen dispersion supplied from the discharge port 108 is not uniform in thickness on the circumference of the collagen casing 200, and in the figure, A thick portion is formed along the discharge direction at one location in the upper part of the collagen casing cylinder, and the thickness of the thick portion after drying is determined by the concentration, supply amount, or discharge port of the second collagen dispersion liquid. By changing the shape of the concave portion of 108, it becomes possible to change the thickness of the other portion to 1.1 to 10 times. It is known that if the thickness of the thick portion is less than 1.1 times the thickness of the other portions, the effect of obtaining curved sausage is not exhibited, and if the thickness is more than 10 times, unpleasant sensation occurs when eating. The manufacturing apparatus for collagen casing according to the present invention is provided at a middle portion of a double cylindrical body composed of an inner cylinder 103 and an outer cylinder 104 rotating in opposite directions from a first collagen dispersion liquid supply port 101. The collagen dispersion is guided to the end of the defined annular passage 106, and the collagen dispersion is discharged from a nozzle formed at the tip of the double cylinder to produce a collagen casing for sausage. A device, wherein at the end an inner surface forming the inner surface of the distal end of the annular passage 106 forming the collagen casing And an inner cylinder 103 having a cylindrical portion positioned at the inner side of the inner tube 103 and a cylindrical portion positioned inside the inner tube 103 from the outside in the radial direction. An outer cylinder 104 having an outer cylindrical portion forming a surface, and having an end inclined toward the inward in the radial direction or an end not inclined, the tip of the cylindrical portion being formed. And encloses the outer cylinder 104, and outwardly surrounds the supply port 102, and surrounds the outer side of the cylindrical portion of the outer cylinder 104 in the radial direction, and at least one half of the outer periphery. A housing 105 forming a second collagen dispersion supply passage for supplying a fixed second collagen dispersion having a droplet shape as a whole having a circular void 108, Wherein the inwardly located tubular portion protrudes outwardly in the direction of extruding the collagen dispersion liquid from the outwardly located tubular portion, and the second collagen dispersion The liquid supply passage is connected to the annular passage 106 at the radially outer position and the pushing direction outer position of the cylindrical portion located outside via the semicircular space 108. And

 The collagen casing 200 coagulated in the coagulation bath is rotated in a certain direction while passing through the coagulation bath, so that the thick part is uniformly coagulated. The thick portion 202 of the third orientation plane exists almost parallel to the longitudinal direction of the casing 200, but it is 0.1 to 2 per 10 m of the casing 200 in length. It is formed in a spiral shape around the circumference of 0 rotation, preferably 0.5 to 5 rotation casing. If the spiral of this thick part is less than 0.5 rotations per 1 Om of casing, coagulation will be uneven, and if it is more than 20 rotations, the tubular collagen casing 200 will be twisted. Occurs. The spiral shape is as follows: When the collagen casing 200 is dried, cut to a certain length, and then wrinkled, the thick strand is wound around the circumference of the sheared strand 201 where the thick part is wrinkled. Due to the wrinkling, it is possible to prevent inconvenience such as excessive adhesion or deformation between the coatings of the collagen casing 200 caused by the thick portion being overlapped at one place.

 The collagen casing 200 which has been solidified while rotating is subjected to a hardening treatment as required, washed with water, plasticized, dried and wrinkled to obtain a product, that is, a shield strand 201.

Next, two specific examples of actual use of the nozzle shown in FIGS. 1 and 2 will be described. explain about.

 In the first specific example, (1) First, a collagen fiber dispersion obtained by mechanically crushing the cowskin floor, a collagen aqueous solution in which the cowskin floor was solubilized by a protease, and The pulp is hydrolyzed, and the powdered cellulose fibers are mixed at a ratio of 70:18:12 based on the dry weight of each, and lactic acid is added to pH 3.0, and the homogenizer is used several times. Then, a first collagen dispersion having a collagen concentration of 4.5% was obtained.

 ② Next, 100 parts by weight of the smoking liquid was added to 100 parts by weight of the floor of the cowhide, the collagen fibers were crosslinked overnight, washed, lactic acid was added, and then mechanically. The mixture was homogenized by passing through a homogenizer several times to obtain a second collagen dispersion having a collagen concentration of 8.0% pH 3.0.

 ③ Then, the first collagen dispersion obtained in ② above was introduced into the supply port 101 in Fig. 2 at a rate of 2.0 kg per minute, and the inner cylinder 103 and the outer cylinder 104 were reversed. It is rotated to discharge from the discharge port through the annular passage 106, and the second collagen dispersion obtained in ② is introduced into the supply port 102 at a rate of 0.2 kg / min. The first collagen dispersion was ejected and molded into a coagulation bath while covering the outside. Three orientation planes are obtained along the rotation direction of the inner cylinder 103 and the outer cylinder 104 and along the discharge direction by the discharge port 108, and of course, the effect of the concave portion of the discharge port 108 As a result, a thick portion was formed almost parallel to the ejection direction. In addition, a clear boundary that causes inconvenience such as separation due to the gentle and reliable agitation effect of the first and second collagen dispersions due to the rotation of the extremely thin thick surface of the outermost part 107 of the outer cylinder The effect of removing the surface was observed. During the coagulation, the ejected collagen casing 200 was coagulated and uniformly coagulated while rotating in the same direction as the three-rotation outer cylinder per 10 m length of the collagen casing.

After hardening treatment, washing, drying after plasticization, and wrinkling, a shear strand 201 was obtained.The thick part was spirally wound around the circumference of the shadow strand, and the thickness was reduced. Since the thick portions 202 were evenly dispersed, inconvenience due to excessive adhesion, such as tearing when the strand 201 in a stuck state was stretched, could be avoided (FIG. 5). The thickness of the thick portion 202 was 52, and the thickness of the other portions was 25. The collagen casing obtained by the conventional method was filled with sausage emulsion, and cooked in a hot water bath. Sausage 203 was obtained.

 Next, a description will be given of a second specific example when the nozzle of the present invention is actually used. First, a plurality of (two in FIG. 4) recesses at the open end 111 formed at the end of the supply port 102 provided in the non-rotating housing 105 are provided at the end of the supply port 102. The same collagen dispersion as the first collagen dispersion was introduced at 0.3 kg / min from the supply port 102 of the second collagen dispersion by using a nozzle provided in the second collagen dispersion. A collagen casing was obtained in the same manner as in (3) of Example 1. In this case, the thickness of the thick portions 202 and 202 'was 35, and the thickness of the other portions was 25 //. When the collagen casing 200 thus obtained was used as a sausage in the same manner as in Example 1, a suitably curved good product was obtained.

 FIG. 7 is a front view of a nozzle 100a for discharging and forming a collagen dispersion liquid according to a second embodiment of the present invention, and FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. . The difference between the second embodiment shown in these figures and the first embodiment shown in FIGS. 1 and 2 is that, in the first embodiment, an oval or water droplet type discharge port 108 is used. Although it was arranged so as to cover a part of the leading end portion 107 of the outer cylinder, in the second embodiment, the discharge port 108 a formed in the housing 105 a is It is provided concentrically with the foremost part 107 so as to cover the entire periphery of the foremost part 107a of 4a. The other points are the same as those of the first embodiment.

According to the second embodiment, the collagen dispersion liquid corresponding to the third orientation plane 202 of the first embodiment is arranged on the entire circumference of the second orientation plane, and the collagen dispersion is composed entirely of three layers. This forms a gas casing. Therefore, in the collagen casing of the second embodiment, the collagen casing 200 of the first embodiment is entirely composed of two layers, and a strip-shaped third alignment surface 202 is formed only in one part in the longitudinal direction. It is different from what is being done. For this reason, a sausage manufactured using the collagen casing formed according to the second embodiment cannot obtain a curved sausage, and rather, a sausage in a linear state is formed. However, the collagen casing formed according to the second embodiment has two casings extruded from the annular passage 106a. Since the first collagen dispersion having an orientation surface and the first collagen dispersion having a third orientation surface are formed, the strength of the collagen casing is higher than that of the collagen casing in the first embodiment. Is strong and there is little trouble in sausage formation.

 FIG. 9 is a cross-sectional view of a nozzle 100b for discharging and forming a collagen dispersion liquid according to a third embodiment of the present invention. The difference between the third embodiment shown in this figure and the second embodiment shown in FIGS. 7 and 8 is that in the second embodiment, the discharge port 108 to which the second collagen dispersion is supplied is provided. Although the lower end of a is completely cut off, in the third embodiment, the lower end of the discharge port 108 b to which the second collagen dispersion is supplied is cut off toward the outside of the nozzle. Is what it is. This makes it possible for the second collagen dispersion to come closer to the first collagen dispersion immediately before being discharged from the nozzle, and to provide a boundary between the first and second collagen dispersions. The surface becomes more difficult to come out, and it is possible to provide a collagen casing having a structure similar to that of the natural intestine.

 FIG. 10 is a sectional view of a nozzle 100c for injection molding of a collagen dispersion liquid according to a fourth embodiment of the present invention. The difference between the fourth embodiment shown in this figure and the third embodiment shown in FIG. 9 is that in the third embodiment, the leading end 107 b of the outer cylinder 104 b is scribed. However, the fourth embodiment is different from the fourth embodiment in that the foremost part 107 c of the outer cylinder 104 c is cut off perpendicularly to the axial direction. Therefore, the nozzle 100c can be easily formed. It is also possible for the second collagen dispersion to accumulate on the first collagen dispersion, and agitation is performed between the first and second collagen dispersion before being discharged from the nozzle, and accordingly, Similarly, a boundary surface between the first and second collagen dispersion liquids becomes difficult, and a collagen casing similar to the structure of natural intestine can be provided.

FIG. 11 is a sectional view of a nozzle 100d for injection molding of a collagen dispersion liquid according to a fifth embodiment of the present invention. The fifth embodiment shown in this figure differs from the fourth embodiment shown in FIG. 10 in that the fourth embodiment supplies the second collagen dispersion liquid provided in the housing 105. Although the inside of the discharge port 108 c to be cut is formed diagonally, the fifth embodiment is different from the first embodiment (FIG. 2) in that such a cut is not provided. . For this reason, the molding of the nozzle 100d becomes easier. ing. However, in this case as well, the second collagen dispersion can accumulate on the first collagen dispersion, before the first collagen dispersion is discharged from the nozzle. Sufficient agitation is provided so that no interface is created between the first and second collagen dispersions, providing collagen packaging that approximates the composition of the natural intestine.

 FIGS. 12 and 13 are cross-sectional views of a nozzle 100e for molding a collagen dispersion ejection according to a sixth embodiment of the present invention. The difference between the sixth embodiment shown in these figures and the embodiment shown in FIGS. 7 to 11 is that the first and second collagen dispersions are discharged in the embodiment shown in FIGS. Collagen casing provides a complete three-layer structure, because the nozzles that discharge are discharged from concentrically arranged outlets, so that only straight sausages are formed, forming a curved sausage. However, the collagen dispersion ejection nozzle 100e according to the sixth embodiment can provide a collagen casing capable of forming a curved sausage. . That is, in this embodiment, the discharge port 108 e formed in the housing 105 e for discharging the second collagen dispersion is an annular passage 10 for discharging the first collagen dispersion. It is eccentrically arranged in one direction (upward in the figure) with respect to the discharge port at the tip of 6e. Therefore, the collagen casing discharged by the nozzle 100 e is entirely composed of three layers of collagen, but the outermost layer forming the third orientation plane is eccentric. On the side (upper side in the figure), it is formed thicker than the other parts. Therefore, when the sausage is formed using the collagen casing formed by the nozzle 100e, the sausage having a moderately curved shape is formed as shown in FIG. Is formed. In this case, the structure of the other inner cylinder, outer cylinder, housing, etc., can be the same as those shown in FIGS. 8 to 11 only by forming the discharge port of the housing with some eccentricity. is there.

In each of the embodiments described above, the inner cylinder and the outer cylinder are rotated in opposite directions to form the first and second alignment surfaces with the first collagen dispersion, and the housing is fixed. Discloses that a third orientation plane is formed by a second collagen dispersion. Force, this is not a limitation, fixing the inner cylinder, rotating the outer cylinder and the housing in opposite directions, or rotating the inner cylinder and the housing in the opposite direction or the same direction, and fixing the outer cylinder By doing so, it is also possible to extrude a collagen casing having a similar structure, and furthermore, rotate the inner cylinder and the outer cylinder in the same direction at different speeds and perform the first orientation by the first collagen dispersion. A collagen casing having a similar structure can also be extruded by forming the surface and the second orientation surface, and fixing the housing to form the third orientation surface with the second collagen dispersion. That will be apparent to those skilled in the art. Industrial applicability

 According to the present invention, a collagen casing having a three-layer structure as a whole by forming a first orientation surface and a second orientation surface with a first collagen dispersion and forming a third orientation surface with a second collagen dispersion Is disclosed. The collagen casing having this three-layer structure is structurally very stable, and has the effect of minimizing trouble in the filling process during sausage formation. If it is desired to form a curved sausage, the outlet of the housing forming the third orientation plane may be mounted eccentrically.

Claims

The scope of the claims 1. A sausage collagen casing formed by a first collagen dispersion and a second collagen dispersion,  The first collagen dispersion forms a first orientation plane and a second orientation plane, and the second collagen dispersion forms a third orientation plane disposed on the second orientation plane. Collagen casing for sausage, characterized in that:  2. The sausage collagen casing according to claim 1, wherein the first orientation surface, the second orientation surface, and the third orientation surface are uniformly arranged concentrically with each other. Collagen casing for sausage. 3. The sausage collagen casing according to claim 1, wherein the first orientation surface and the second orientation surface are uniformly arranged on a concentric circle, but the third orientation surface is the first orientation surface and the second orientation surface. 2. A collagen casing for sausage, wherein the casing is arranged eccentrically to one side with respect to the second orientation plane.  4. The collagen casing for sausage according to claim 1, wherein the first orientation surface and the second orientation surface are uniformly arranged on concentric circles, but the third orientation surface is a longitudinal portion of the collagen casing. When viewed in a cross section cut in a direction perpendicular to the direction, at least one point of the collagen casing has a thickened portion, and the collagen fibers of the thickened portion are the collagen casing. A sausage collagen casing characterized in that it is oriented substantially parallel to the longitudinal direction of the sausage.  5. The collagen casing for sausages according to claim 1, wherein the collagen fibers oriented substantially parallel to the longitudinal direction of the collagen casing are more than the collagen in other parts of the collagen casing. A sausage collagen casing having a cross-linking bond. 6. The portion where the thickness is increased is 1.1 to 10 times the thickness of the other portion and extends substantially parallel along the longitudinal direction of the collagen casing. 3. The sausage core according to claim 1, wherein the collagen casing is disposed in a spiral shape around the circumference of the collagen casing by rotating 0.5 to 20 times per 10 m of the length of the casing. Lagenge Singe.  7. A nozzle comprising an inner cylinder, an outer cylinder, and a housing, wherein the nozzle has an annular passage for discharging the first collagen dispersion liquid between the inner cylinder and the outer cylinder. A discharge port for discharging the collagen dispersion, wherein the annular passage and the discharge port are located at the center of the nozzle, and a first alignment surface and a second alignment surface are formed by the first collagen dispersion liquid. And a collagen casing manufacturing apparatus characterized by rotating the inner cylinder, the outer cylinder, and the housing relative to each other to form a third orientation surface with the second collagen dispersion liquid.  8. The collagen casing manufacturing apparatus according to claim 7, wherein the inner cylinder has a hole at a central portion through which a coagulated liquid passes,  The outer cylinder is arranged around the inner cylinder,  A housing is arranged around the outer cylinder,  An annular passage formed between the inner cylinder and the outer cylinder for discharging the first collagen dispersion liquid, directed from radially outward to radially inward, and then directed forward in parallel with the axial direction; Forming a tip that is  A discharge port for discharging the second collagen dispersion formed in the housing is directed from the outside in the radial direction to the inside in the radial direction and forms an open end that is open near the tip of the annular passage. ,  The tip of the annular passage and the open end of the discharge port are located concentrically from the center of the nozzle,  A collagen casing manufacturing apparatus, characterized in that:  9. The collagen casing manufacturing apparatus according to claim 7, wherein the inner cylinder has a hole at a central portion through which a coagulating liquid passes,  The outer cylinder is arranged around the inner cylinder,  A housing is arranged around the outer cylinder,  An annular passage formed between the inner cylinder and the outer cylinder for discharging the first collagen dispersion liquid is directed from radially outward to radially inward and then forwardly and parallel to the axial direction. Forming a tip that is The discharge port for discharging the second collagen dispersion formed in the housing has a radius Forming an open end which is directed from the outside to the radially inward and is open near the tip of the annular passage,  The open end of the discharge port is eccentrically arranged radially outward from the center of the nozzle with respect to the tip of the annular passage,  A collagen casing manufacturing apparatus, characterized in that: 10. The collagen casing manufacturing apparatus according to claim 7, wherein the inner cylinder has a hole at a central portion through which a coagulating liquid passes,  The outer cylinder is arranged around the inner cylinder,  A housing is arranged around the outer cylinder,  An annular passage formed between the inner cylinder and the outer cylinder for discharging the first collagen dispersion is directed radially inward from radially outward and then forwardly parallel to the axial direction. Forming a tip that is  A discharge port for discharging the second collagen dispersion formed in the housing is directed from radially outward to radially inward, and at least one water droplet type is formed in a part of the periphery near the tip of the annular passage. Forming an open end that is open to  The discharge port is substantially closed to the annular passage except for the open end of the water droplet type;  An apparatus for manufacturing a collagen casing, comprising:  11. The collagen casing manufacturing apparatus according to claim 7, wherein the inner cylinder and the outer cylinder are rotated in directions opposite to each other.  12. The collagen casing manufacturing apparatus according to claim 7, wherein the inner cylinder and the housing are rotated in directions opposite to each other.  13. The collagen casing manufacturing apparatus according to claim 7, wherein the outer cylinder and the housing are rotated in directions opposite to each other. 14. The collagen casing manufacturing apparatus according to claim 7, wherein the inner cylinder and the outer cylinder are rotated at different speeds in the same direction with each other. One-gen casing manufacturing equipment.  15. The collagen casing manufacturing apparatus according to claim 7, wherein the inner cylinder and the housing are rotated in the same direction at different speeds.  16. The collagen casing manufacturing apparatus according to claim 7, wherein the outer cylinder and the housing are rotated in the same direction at different speeds.  1 7. From the first collagen dispersion liquid supply port 101, to the end of the annular passage 106 defined in the middle part of the double cylinder composed of the inner cylinder 103 and the outer cylinder 104. An apparatus for producing a collagen casing for sausage by guiding a collagen dispersion liquid and discharging the collagen dispersion liquid from a nozzle formed at the tip of the double cylindrical body;  At the end, an inner cylinder 103 having an inwardly located cylinder forming the inner surface of the distal end of the annular passage 106 forming the collagen casing;  A tubular portion that surrounds the inside of the inner cylinder 103 from the radial outside and forms an outer surface at the end of the annular passage 106, and has a tubular portion that is located outside. An outer cylinder 104 in which the distal end of the cylindrical portion forms an end that is inclined inward in the radial direction or an end that is not inclined,  The outer cylinder 104 is surrounded, the supply port 102 is outwardly surrounded, and the outer cylinder 104 is radially outwardly surrounded by the cylindrical portion of the outer cylinder 104, and has at least one semicircular shape. A housing 105 forming a second collagen dispersion supply passage for supplying a fixed second collagen dispersion having a generally droplet shape having a void 108 of  Composed of  The inner cylindrical portion protrudes outward in the collagen dispersion extrusion direction from the outer cylindrical portion, and the second collagen dispersion supply passage is formed in the semicircular void. Characterized in that it is connected to the annular passage 106 at a position radially outward and a position outward in the extrusion direction of the cylindrical portion located outside through a vial. 8. Claims? In the apparatus for manufacturing a collagen casing described in any one of Items 1 to 17, A collagen casing manufacturing apparatus, characterized in that the outermost part of the outer cylinder in which the collagen dispersion liquid is discharged is skived at the outermost part in the radial direction.  1 9. The collagen casing manufacturing apparatus according to claims 7 to 14, wherein the inner part of the discharge port of the housing for discharging the second collagen dispersion liquid is skived outward. Characteristic collagen casing manufacturing equipment. 20. The collagen casing manufacturing apparatus according to claim 18, wherein the inner part of the discharge port of the housing for discharging the second collagen dispersion liquid is not scribed outward. Collagen casing manufacturing equipment. 21. The collagen casing manufacturing apparatus according to claim 18, wherein an inner portion of the discharge port of the housing for discharging the second collagen dispersion is scribed outward. Collagen casing manufacturing equipment. 22. The collagen casing manufacturing apparatus according to claim 19, wherein the outermost portion of the outer cylinder for discharging the first collagen dispersion, which is the outermost portion in the radial direction, is not skived. Collagen casing manufacturing equipment. 2 3. The collagen casing manufacturing apparatus according to claims 7 to 17, wherein the outermost portion in the radial direction at the foremost portion of the outer cylinder for discharging the first collagen dispersion is not skived. 2. An apparatus for producing collagen casing, wherein an inner part of a discharge port of a housing for discharging a collagen dispersion liquid is not skived outward.