US2083969A - Means for forming laminated tubes from web material - Google Patents

Description

.Fame l5, E937. C. T. WALTER' @083,959

MEANS FOR FORMING LAMINATED TIJBES FROM WEB MATERlAL Filed June 5, 1955 2 Sheets-Sheet l ffy, j'

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C/dr/e 2.' We Zier INVENTOR @MWM ATTORNEY June l5, 137. c. T. WALTER 2,083,969'

MEANS FOR FORMING LAMINATD TUBES FROM WEB MATERIAL Filed June 5, 1935 2 Sheets-Sheet 2 C72/arles .Z Miter INVENTOR ATTORNEY Patented lJune 15, 1937 PATENT OFFICE MEANS FOB FORMING LAIVIINATED TUBES FROM WEB MATERIAL Charles T. Walter, Chicago, lll., assignor to Industrial Patents Corporation, Chicago, Ill., a corporation of Delaware Application June 5, 1935, ISerial. No. 25,176

2 Claims.

This invention relatesto an improved apparatus for forming laminated tubes from web material. T One of the objects of the invention is to provide apparatus for forming synthetic sausage casings from web cellulose material.

Another object of the invention is to provide* means for forming laminated tubes from web material in a continuous manner.

Other objects of the invention will be apparent from the description and `claims which follow.

In the accompanying drawings similar reference characters in the several figures indicate similar parts.

Figure 1 is a sectional View illustrating one embodiment of the apparatus of the present invention. v

Figure 2is a vplan view of the apparatus shown in Figure 1. s

Figure 3 is a side view partly in section showing another embodiment of the apparatus. y

' Figure 4 isA a cross sectional view of the forming horn and mandrel taken on 4-4 of Figure 3.

Figure 5 is a sectional view of the laminated r web from which the casing is formed taken on line 5'-5 of Figure 1. A

Figure 6 is asectional view of the casing after forming taken on the line 6.-6 of Figure 1.

Figure '7 is a perspective view of a portion of casing prepared with the apparatus of the present invention.

Referring now more particularly to Figure 1:

The various elements of the apparatus are mounted upon frame I. A roll of web cellulosic material 2 unwinds from shaft 3, rotatably supported in brackets 4 and 5. As cellulosic web 6 is unwound from roll 2 it passes over glue roll 1. Glue roll 1 is mounted on shaft 8 which is rotatl ably mounted in brackets 9 and I0. Glue roll 1 picks up liquid glue or cement from pan II and applies the glue or cement to the under surface of web 6 as it is drawn tautly over applicator 1. Roll I2 of web cellulose material is wound on shaft I3 which is rotatably mounted in brackets I4 and I5. Cellulosic web I6, as it is unwound from roll I2. passes between rollers l1 and I8 as does web 6. ARoller I1 is mounted on shaft I9 and roller I8 is mounted on shaft 20. Shaft I9 is rotatably mounted in brackets 2l and 22 and shaft 2l) is rotatably mounted in brackets 23 and 24. Rollers I1 and I8 serve to press web 6 and web I6 together forming a laminated web 25.

It will be noted by reference to Figure 2 that roll I2 and roll 2 are positioned on-respective shafts I3 and 3 such that the laminated web 25 formed of webs I6 and 6 is formed with the laminations offset. This may be clearly seen in Figure 5. 'I'his construction, it will be seen by reference to Figure 5, results in the area A of single thickness, area B of double thickness and the 5 area C of single thickness. Laminated web 25 after passing between rollers I1 and I8 which have served to firmly and smoothly form the laminated web 25 from webs I6 and 6 passes over glue applicator roll 26. 10

It will be noted by reference to Figure 2 that applicator roll 26 is narrow and serves to apply a band B1 of glue orv cement upon area B as indicated in Figure 5. Applicator roll 26 may .or may not be large enough to apply glue or cement 15 as well to area A. This, however, is unnecessary since area A has already received glue or cement from applicator 1. Applicator roll 26 is mounted on shaft 21 which is rotatably mounted in brackets 28 and 29. Applicator roll 26 picks up 20 glue from glue box 30. After passing over applicator roll 26 laminated web 25 passes over tensioning roll 3|. Tensioning roll 3| is mounted upon shaft 32 which is rotatably mounted in brackets 33 and 34. It will be noted that roll 3| 25 is provided with groove 3 Iw to avoid contact with area B1. In the form of the apparatus shown in Figures 1 and 2 web 25 is then fed over mandrel 35 supported by risers 36 and 36a.

Web 25, which is, of course, moving in the di- 30 rection of the arrows, is pressed downwardly by forming spindle 31. Spindle 31 is rotatably mounted on shaft 38 which is mounted in brackets 39 and 40. Side spindles 4I and 42 serve to complete the forming of the cylindrical tube. Spin- 35 dle 4I is rotatablymounted on shaft 43 which is rigidly aiiixed to frame I. Spindle 42 is rotatably mounted on shaft 44 which is also rigidly aiiixed to frame I.

The formed casing then passes over spindles 45 40 and 46 which serve to seal the joint 41. Spindle 45 is rotatably mounted on shaft 48 which is supported in brackets 49 and 50. Spindle 46 is rotatably mounted op shaft 5I which is supported in brackets 52 and 53. The completed casing is 45 then passed betweenpresser rollers 54 and 55. Roller 54 is mounted on shaft 56 supported in bracketsv 51 and 58. Roller 55 is mounted on shaft 59 supported in brackets 66 andl. Presser rollers 54 and 55 are positioned closely in order 50 to provide sufiicient friction to draw the material through the apparatus. Rollers 54 and 55 are somewhat narrower than the casing to avoid creasing the casing too sharply at the edges. Roller 55 is driven by motor 62 through chain 63 55 and sprockets 64 and 85. After passing between rollers l and 55 the completed ca sing 68 may be cut into desired lengths as shown in Figure '7.y

In the embodiment of the forming means shown in Figure 3 forming horn 61 is'substituted for spindles 31, 4I and 42 and serves a function similar to that served by the spindles.

It will be seen that by use of the apparatus of the present invention, there is provided a laminated cellulosic casing of great strength, the casing being formed from web cellulose or other suitable material in a continuousmanner and being provided with a lap joint as may be readily noted in Figure 6.

I claim:

1. An apparatus for forming tubular casings from web material comprising means for supporting a rst web roll, means offset relative to the Y supporting means for supporting a second web roll so that one of the longitudinal edges of the web of the rst roll will project beyond the corresponding longitudinal edge of the web of the second roll and the other longitudinal edge of the web of the second roll will project beyond the corresponding longitudinal edge of the web of the first roll, means for simultaneously feeding the webs ofthe several rolls, means for applying an adhesive to one entire surface of the web of theY first roll, means for bonding the webs of the several rolls, means for applying an adhesive near the longitudinal edge of the web of the second roll adjacent the projecting edge of the web of the first roll and'means for forming the resultant laminated web in the form of a tube with the longitudinal edges of each of the webs of the several rolls in over-lapping relationship to provide a double lapped seam.

2. An apparatus for forming tubular casings from web material comprising means for supporting a iirst web roll, means oi'i'set relative to Y the supporting means for supporting a second web roll so that one ofthe longitudinal edges o! the web of the first roll will project beyond the corresponding longitudinal edge of the web o1' the second roll and the other longitudinal edge of the web of the second roll will project beyond the corresponding longitudinal edge of the web of the first roll, means including presser rollers for simultaneously feeding the webs of the several rolls, means for applying an adhesive to one entire surface of the web of the first roll, means for bonding the webs of the several rolls, means for applying an adhesive near the longitudinal edge of the web of the second roll adjacent the projecting edge of the web of the rst roll and means for forming the resultant laminated web in the form of a tube with the longitudinal edges of each of the webs of the several rolls in overlapping relationship to provide a double lapped seam, the presser rollers of the feeding means being of less width than the formed tube and adapted for applying pressure against the lapped seam of the formed tube.

" CHARLES T. WALTER.

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