JPS60110655A - Ribbed cylindrical material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to the technical field of pleating and compressing flexible cylindrical materials. In particular, this invention relates to a method of creasing and compacting tubular material that provides a unique crimp pattern and allows for the production of highly dense, commercially acceptable fluted bamboo tubular products.

(Prior Art) In the manufacture and use of flexible tubular materials, especially those used in the food industry to contain food products, it is common practice to use such tubular materials for ease of subsequent handling. Along the longitudinal axis pleats increasingly need to be compressed. Folding compression is the process of maintaining a hollow passageway inside the cylinder along the longitudinal axis of the cylinder, causing the passageway within the cylinder to become undesirably compressed.
refers to a process that involves creasing a long length of tubular material in such a way as to significantly reduce its handling size without sacrificing the material.

In the food industry, folding of tubular tags used to store meat, cheese, and other processed foods is particularly important in Frankfurt and 71! It is especially necessary to simplify filling in the production of cylindrical products containing meat, including sausages such as sausages. Commercially, pleated cylindrical parts such as food packaging skins for sausages have a ratio of the length of the folded stretched packaging material to the length of the folded compressed packaging material (folded compressed density), which is difficult to prevent pinholes and other It is desirable that the shape of the cylinder be as large as possible without damaging the cylinder. The length of the pleat compression wrapper (pleat compression stick) should be as straight as possible to resist bending and breakage. The inner bore of the pleated compression stick should be of maximum diameter and should be easily and easily removable from the square stuffing container.

For example, in the technical field of pleat compression, such as U.S. Patent No. 3,456,286, 40 to 160 feet
(12,2 to 48.8 m) long cylinders each having a minimum length of approximately 4 to 16 inches (10,2 to 40.6 crrL) to produce a stick sound. Can be pleated. 8 feet 7' inches like this (
At high densities of 0.96 m/cTL or higher, defects such as pinholes are not uncommon. The packaging material sticks thus soaked and compressed are manually or automatically filled with meat or other food products. In a typical stuffing operation, a stick is attached to a square stuffing container that is connected to a stuffing source. As the stuffing is then pressure injected into the pleat compression stick through the stuffing prismatic container, the stick stretches and the stuffing fills the cylinder to the initial pleat extension length.

For reasons of economy and to speed up the filling operation, it is commercially desirable to have a self-supporting bottle compaction stain that is highly compressed in length, uniformly planar, and has a large internal diameter. The durability of the stick is necessary to ensure trouble-free operation; the high density allows more product to be packed in one filling operation; and to ensure proper loading operation into square containers. 1M1tl properties are required; pore size is also important in maximizing packing speed. These multiple factors are important in increasing the efficiency of the packing process and are required in industry to offset rising labor and machinery costs.

The pleating and compaction of sausage wrappers is generally carried out by the usual method of pleating the wrapper over a guide element (the pleat is a mandrel) which extends longitudinally throughout the hole in the wrapper. In general, the wrappers are crimped on a mandrel, which is placed around the wrapper, grips the outer circumference of the wrapper, conveys it axially against a fully controlled flexible buffer, and folds the wrapper into sections. It is compressed in the axial direction by the opening element. U.S. Pat. No. 2,010,626 discloses that the crimping fingers placed one after the other move in the axial direction of the sausage wrapper, and the manual crimping is performed in the same way as the crimping fingers. A method of shirring and compression is disclosed, such as applying a compression action to form a shirred and compressed product. Also B ] j,
U.S. Patent No. 2,722,71 to Zzard et al.
No. 4, No. 2,722,715 and No. 2.723,20
No. 1 improves the crimping process by expanding the hollow packaging skin onto the mandrel, and crimping the pleats on the elastic belt by contacting them with protrusions. . The protrusions of the pleats are arranged in a zigzag pattern so that no force is applied to any of the pleats that come into contact with the spaces facing the protrusions.

U.S. Patent Nos. 3,461,48/1 and 3,454,9
In No. 82, the pleats cut in a spiral curve shape have protrusions, and the rotating pleats have a ring that contacts the expanded outer circumference of the packaging skin in a spiral shape.The wrinkles act as fingers, and the packaging skin has a spiral shape. Discloses a process in which the material is textured and formed into continuous spiral pleats. In other words, these patents disclose a process in which a pleating force is continuously applied to the outer periphery of the packaging skin and progresses in the longitudinal direction of the packaging skin along a helical line.

Compressing the entire pleat of packaging material sequentially along a helical line has proven to be of great commercial importance to the industry and has been the subject of numerous patents. U.S. Patent No. 3,
No. 779,284 consists of a method for obtaining a single left-handed helical pleat, ξ-turn, which includes a counter in which an adjacent zone preceding an adjacent zone of the pleat by a single helical line undergoes a rotational displacement. However, this left-handed helical pleating process did not have great commercial success.

US patent! No. 4,377,885 describes a shaftless gear device used in spin pleating of synthetic TFF, I resin tubular packaging material to obtain helical line pleating and ξ turns. . This apparatus is particularly suitable for forming continuous chalacene shirring and shirring compaction according to the process of U.S. Pat. No. 3,4'61,484. In the shaftless gearing system, the pleated rolls including a plurality of flute teeth are arranged in an assembly of at least four rolls. The valley rolls are distributed at equal angular intervals around the centers receiving the circumferential mandrel in a plane transverse to the mandrel axis. Shirring is a roll in which an inflated cylindrical packaging material is attached to a cylindrical mandrel, and during shirring, the meshing teeth are staggered, and the rolling material is successively engaged with the packaging material within the common meshing zone. installed to match. The entire apparatus rotates and the shirring roll teeth successively engage the bulging packaging material to successively recess and shirt the packaging material into a single continuous helical line.

(Objects and Structure of the Invention) The objects of the present invention are low defect occurrence frequency, self-sustaining durability,
It is an object of the present invention to provide a novel pleated cylindrical material having straightness from one end to the other, a large inner hole, and a high pleated compression density.

The purpose is that the packaging material is conveyed along its longitudinal axis,
The pleats that act on the outer periphery of the packaging material apply a force, and the pleats are compressed because the element resists the reaction force, and the pleats are compressed. This is accomplished by a compressing process. In this case, the crimping force means a force that has a component along the longitudinal axis of the cylinder and acts to create pleats and compress the cylinder. The reaction force typically consists of a restrained advance of the previously shirred wrapper, equal to the direction in which the wrapper is shirred.

In the process of the present invention, force is repeatedly applied to the outer periphery of the cylindrical body during the pleating process. - The savings in a set are applied simultaneously at equally spaced positions along the circumference, and the savings in each set are applied along separate helical lines on the outer periphery of the cylinder. - The force of the set advances so as to pleat the cylinder against the reaction force.

Here, "equal intervals" means that the lengths of the distances or intervals being compared differ from each other by about 25 factors or less. Also, "repeated application" means that the forces of - group are applied first. , then the same set of forces is subsequently reapplied. - Pulling the set of forces - The subsequent application occurs at another set of equally spaced positions, each of these positions being Exists on one of the spiral lines.

The pleated product of the present invention is a densely pleated cylindrical material having a central axial inner hole and a cylindrical outer surface. a plurality of outer folds, each disposed along at least two parallel and oppositely parallel, longitudinally extending criss-crossing helices, and in close proximity to a plane perpendicular to the longitudinal axis of the cylinder; , each has an inner fold connecting the opposite points of the shape defined by the outer fold. These shapes are generally diamond-shaped. The outer folds may be arranged arbitrarily along 3, 4 or more of said parallel warps and 3, 71 or more of said oppositely parallel warps.

The cylindrical material to be pleated in this manner can be made of any flexible material that has a sufficiently thin wall thickness and can withstand the force of the pleat without being damaged. Typical flexible materials used for food packaging include natural and synthetic polymers such as collagen, alginates, and starch, plastics, proteins, carbohydrates, cellulose materials such as cellulose esters, cellulose ethers, and regenerated cellulose, as well as other materials. It can be composed of natural, synthetic or man-made materials.

(Embodiment of the Invention) In one embodiment of the present invention, high pleat compaction density! A pleated compression stick of elongated, durable sustained force tubular material is provided. The outer circumferential surface is cylindrical and has a densely compressed patterned appearance that is visually appealing. The internal hole is straight Y from one end of the stick to the other. Such a pleat compression stick is a multi-pleat device known in the art, which, according to an inventive process, is adapted to simultaneously contact a swollen tubular material along two or more helical lines. It can be created using modified items. This change is defined as X! with respect to the longitudinal axis of the cylinder at two or more equidistant points on the circumference of the cylinder along a continuous helical line. Allowing simultaneous contact in angular planes, the cylinder forms unique, usually diamond-shaped patterned folds of the invention when compressed, resulting in criss-cross helices.

Referring now to FIG. 1, which shows a prior art shirring/e-turn, Zone
The pleating according to the process and apparatus of No. 4,377,885 shows an elongated portion of a compressed wrapper stick. In the figure, each pleat consists of an outer fold 3 and an inner fold 4, which are joined through the sides 1 and 2 of the pleat. The inner fold 4 is formed by the successive recessed engagement of protrusions or teeth along the helical line indicated as the inner fold. Engagement along the helical line is accomplished by continuously rotating the protrusion about the wrapper while continuously advancing the wrapper through the point of engagement. The outer fold 3 is parallel to the inner fold 4 and is formed by compressing the concave packaging material axially against the buffer.

FIG. 2 shows the shirring and ξ-lines in an embodiment of the present invention, where the shirring is in the expanded position of the compressed packaging material. In the figure, zone Y indicates the stretch section of the compressed packaging material stick, and each O. is the outer fold 5.6.
7 and 8 and the inner fold consists of September 13° 14, 1.5 and 16. The inner folds 1a, 14 are formed simultaneously by the simultaneous engagement of the opposing pleats with each other. Inner folds 1.5; 1-6 are along discrete helical lines obtained by successive rotation of the projections or teeth about the wrapper while continuously advancing the wrapper through the point of engagement. , opposing pleats are formed by continuous circumferential engagement of projections or teeth. When the center points of the inner folds 13.15 are connected, these folds correspond to the same continuous helical line, while the inner folds 14.1.6
Each center point of is located on a continuous spiral line parallel to the above line. Further, the outer folds 5 and 7 are located along a continuous spiral line, while the outer fold 6 is located along a continuous spiral line.
．． 8 is located along a continuous spiral line in the direction opposite to the above line, and both outer folds compress the packaging material in the axial direction against the previously pleated packaging material (reaction force). formed by Each outer fold5. -6.7
and 8 can be formed without rotating the packaging material. The intersection of the opposite outer folds usually confines each vertex of the diamond shape.

Further, the inner fold passes through these vertices. In a preferred embodiment, the four points of each diamond are slightly rotationally displaced from the corresponding points of each preceding adjacent diamond in a well-ordered manner. When compressed against a reaction force, the points are spaced apart so as to interlock alternately in the compression direction, thereby greatly improving the durability of the stick and the straightness from end to end.

Is it possible to modify B to make the pleated compression stick of the present invention? One device effective for F is U.S. Pat.
The axial pleat disclosed in No. 7.885 is a shaftless gearing system for compression. FIG. 3 shows a rotating pleating head so modified, and the rotating pleating apparatus shown is mainly composed of four pleating rolls 21, 22.
．． 23 and 24, each roll having a plurality of concave arcuate pleats with teeth 25 and located in a common plane of the assembly 20 to receive a cylindrical mandrel (with a central opening 26 dimensioned C). They are distributed at equal angular intervals in the center. Each of the four rolls is equipped with a tapered (<S) gear 27, which rotates each roll at the same speed as the outer roll, and each pleat is The teeth 25 engage with the tubular material to be crimped mounted on the mandrel with the same force and speed and are interconnected so that they are always in a continuous and timed relationship. The attached roll 21 is a tapered gear drive means 28
and the drive means are interconnected to a drive means (not shown) as disclosed in U.S. Pat. No. 4,377.885 (C) through a gear 27.

U.S. Patent Nos. 4,377.885 and 4,354,2
As described in No. 95, in the creasing of the device, the rolls rotate, and the creasing teeth of each roll engage with the cylindrical material sequentially around the rotation axis of the device, 4 of the apparatus shown in FIG. 3 timed to successively overlap in zones to form a single continuous helical fold within the tube.
For individual pleats, the timing of the rolls is such that each pleat does not engage the teeth sequentially, but for the opposing pleats, the teeth of the roll are released at the same time, and the opposing pleats are expanded at the outer circumferential point of the solo shape. determined to engage the material. In other words, the pleats of the roll 21 are the teeth 25, and the corresponding pleats are the roll 2.
3 engages with the cylinder on the mandrel at the same timing as the teeth 25, while the pleats on the roll 22 engage with the cylinder at the same timing as the teeth 25.
5, the corresponding pleats on the roll 24 engage with the cylindrical body on the mandrel at the same timing as the teeth 25. These opposing pleats are combined with the engagement of the teeth, the axis rotation of the device, and the advancement of the cylinder body as the teeth rotate, forming a spiral shape with the center point being parallel to the center point. It can be thought of as drawing parallel circumferential lines. The forward movement of the cylinder resisting the restraining force
The packaging material located between the drawn helical lines is folded to form a keg ear-shaped . The inner crease defines the A-line, which is parallel to the longitudinal force, and which is parallel to the vertical force. In double compression sticks, each diamond-shaped apex is O. Total increase.

In opposed roll pleating, the engagement at each point on the opposing circumference of the cylindrical body with expanded teeth does not necessarily have to be exactly simultaneous, nor does it have to be exactly circular. The engagement of the teeth with opposing pleats is approximately 20 degrees perpendicular to the longitudinal axis of the cylinder.
At a point within the arc of 0, a pleated bamboo cylinder as described above is produced. Therefore, the terms "simultaneous" and "circular" as used herein are defined as falling within the above engagement limit of approximately 20° arc, and include opposing engagements that describe an ellipse with a 20° arc. .

The ordered pattern of pleated compression sticks according to the invention provides unexpected advantages in terms of density. That is, 8 feet/inch (096 m/cIn
) or more can be easily obtained, approximately 8 feet/
Densities from about 1.2 inches (0.96 m/cm 2 ) to about 12 feet/inch (1.44 m/cm 2 ) are preferred. Moreover, such high densities are easily obtained without the need for subsequent additional compression and without damage to the packaging material. Although this high density is an unexpected advantage, the method of the present invention can of course
) can also be easily used to make whole pleated compression sticks with densities below.

Based on the method of the present invention, U.S. Patent No. 4,377.885
No. 4,354,295;
The O5 type shirring machine was modified so that opposing shirring rolls engaged simultaneously in accordance with FIG. 3 and the method of the present invention. During the shirring operation, the gear assembly is rotated at approximately 75° rpm and has a diameter of approximately 43.4:3 mm and a thickness of approximately 76 mils.
A 29 mm diameter pleat was fed through the mandrel at a speed of about 7 m/sec while the cylindrical bale fiber-reinforced cellulose packaging material, 29 mm in diameter, was air expanded. The tubular material was crimped and compressed against the removal bushing of the suppression reaction force recovery mandrel. The resulting pleated product has a pleat compaction density of approximately 892 ft/in (1.07 m/cm), is resistant to bending and breakage, and has an orderly patterned outer surface that interlocks in a staggered manner. It was constructed as a straight stick with a spaced pattern of dots. Folding occurs when the compressed packaging material is opened, and the outer folds of the pattern appear along two criss-crossing spiral lines that define each diamond shape, while the inner folds form diagonally across each diamond shape. It was crossing.

Although the present invention has been described in detail with respect to its preferred embodiments, it will be obvious to those skilled in the art that various changes and modifications can be made to the present invention without departing from the spirit and scope of the invention as set forth in the claims.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the structure of the pleats obtained by conventional pleating of helical lines; Fig. 2 is a perspective view showing the helical structure of the pleated bamboo tubular material of the present invention in reverse criss-cross directions; FIG. 3 is a partial front cross-sectional view of a conventional rotary pleated head modified to the present invention. 5, 6.7.8...Outside fold line, 13, 1.4.1.5.1.6...Inside fold line. (5 others) jsu・3・

Claims (1)

[Scope of Claims] 1. A central axial hole is a pleated tubular member having a cylindrical outer surface, and when the tubular member is expanded,
a plurality of outer folds, each disposed along at least two parallel and oppositely parallel, longitudinally extending criss-crossing helices and adjacent to a plane perpendicular to the longitudinal axis of the cylinder; A pleated cylindrical material having a plurality of inner folds connecting opposite points of a molding pattern defined by criss-crossings of the outer folds. 2. The pleated cylindrical material according to claim 1, wherein when the cylindrical material is expanded, the formed ξ turns form a diamond-shaped pattern. 3. The pleated cylindrical material according to claim 2, which is made of regenerated cellulose. 4. The pleated cylindrical material according to claim 3, which includes reinforcing fibers. 5. The pleated cylindrical material according to claim 2, which is made of collagen. 6. The pleated cylindrical member according to claim 2, which is made of thin plastic. 7. The pleated cylindrical material according to claim 2, wherein the cylindrical material is a sausage wrapper. 8. The pleated cylindrical material according to claim 2, wherein the inner fold is located in a plane perpendicular to the longitudinal axis of the cylindrical material. 9. The pleated tubular material according to claim 2, wherein the outer folds are arranged along two parallel and oppositely parallel helices, arranged longitudinally and crisscrossing each other. 10. The pleated tubular material of claim 2, wherein the outer folds are each arranged along three parallel and oppositely parallel helices extending longitudinally and crisscrossing each other. 11. The pleated cylindrical shape of claim 2, wherein the outer folds are each arranged along four parallel and oppositely parallel helices extending longitudinally and crisscrossing each other. 12 The compressed density is approximately 8 to 12 feet 2 inches (
0.96~1-. 44 m/lx). The sausage packaging skin of claim 7. 13 The compressed density is 8 feet/inch (096ml
>, ) or more, the sausage packaging skin according to claim 7. 14 - The shirring of a set involves the repeated application of a force to the outer circumference of a cylinder, wherein - each shirt of the set includes the force being applied simultaneously to each other at equally spaced positions along the circumference; Each pleat is characterized in that a force is applied along a different helical line on the outer periphery of the barrel, and that said force advances the barrel against a reaction force to effect the pleat. How to form a cylindrical body. 15. The method of claim 14, wherein the -set of shirring forces are applied at two opposing points on the circumference. 16. The method of claim 14, wherein the force is applied at three points on the circumference. 17. The method of claim 14, wherein the force is applied at four points on the circumference. 18. The method of claim 14, wherein the circumferential position is within an arc of 20° from a plane perpendicular to the longitudinal axis of the cylinder. 19. The compacted density is 8 feet/inch (0.96 m
15. The method of claim 14, wherein the diameter is less than 1 cm). 20 The compacted density is approximately 8 feet/inch (0.96
m/硼) to approximately 12 feet/inch (1.44 m^)
15. The method of claim 14. 21. The method of claim 14, wherein the pleated cylinder is a sausage wrapper. 22 Claim No.°'l wherein the sausage packaging skin is made of collagen! Method in section 1. 236. The method of claim 21, wherein said sausage wrapper comprises regenerated cellulose. 24. The method of claim 23, wherein said wrapper comprises reinforcing fibers. 25. The method of claim 21, wherein said packaging skin is made of thin-walled plastic.