CA2333102A1 - Hybrid liners having reduced adhesion to an unvulcanized rubber material - Google Patents
Hybrid liners having reduced adhesion to an unvulcanized rubber material Download PDFInfo
- Publication number
- CA2333102A1 CA2333102A1 CA002333102A CA2333102A CA2333102A1 CA 2333102 A1 CA2333102 A1 CA 2333102A1 CA 002333102 A CA002333102 A CA 002333102A CA 2333102 A CA2333102 A CA 2333102A CA 2333102 A1 CA2333102 A1 CA 2333102A1
- Authority
- CA
- Canada
- Prior art keywords
- liner
- sticking
- propensity
- unvulcanized
- strip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0067—Using separating agents during or after moulding; Applying separating agents on preforms or articles, e.g. to prevent sticking to each other
- B29C37/0075—Using separating agents during or after moulding; Applying separating agents on preforms or articles, e.g. to prevent sticking to each other using release sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/0016—Handling tyres or parts thereof, e.g. supplying, storing, conveying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/28—Wound package of webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/0016—Handling tyres or parts thereof, e.g. supplying, storing, conveying
- B29D2030/0038—Handling tyre parts or semi-finished parts, excluding beads, e.g., storing, transporting, transferring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2021/00—Use of unspecified rubbers as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/172—Composite material
- B65H2701/1722—Composite material including layer with adhesive properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/18—Form of handled article or web
- B65H2701/184—Wound packages
- B65H2701/1846—Parts concerned
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/19—Specific article or web
- B65H2701/194—Web supporting regularly spaced adhesive articles, e.g. labels, rubber articles, labels or stamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/93—Tyres
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Tyre Moulding (AREA)
- Packaging Of Machine Parts And Wound Products (AREA)
- Packages (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
A hybrid liner (40) and system for using a hybrid liner includes a first portion (42) being made of one material and a second portion (44) being made of a separate material. The two materials have a different propensity for sticking to the unvulcanized rubber component (20) as well as a different cost. The invention concerns using the less sticky, more expensive liner in the areas of the liner roll where sticking is more likely to occur and using the less expensive material where liner to rubber adhesion is less of a problem.
Description
HYBRID LINERS HAVING REDU1~D ADHESION TO AN UNWLCANIZED RUBBER MATERIAL
Technical Field The invention pertains to the manufacture of articles utilizing tacky or sticky components, generally in strip or sheet form. One common application of the invention is in the tire manufacturing industry where unvulcanized elastomeric components are commonly extruded in strip or sheet form and are wrapped in liners until they are incorporated into.the tire during the manufacturing process. _ .
Bacl~ound Art ~~" ' It is known to store unvulcanized elastomeric tire components in.liners. It is also known fo manufacture liners of different materials, such as cotton and polyester.
U.S. Patent No. 4,OCI6,051 to Board, Jr. discloses a laminate liner to'be secured to a supporting surface. The liner comprises, in combination, a backing sheet -,.:.»:;.
member characterized by a large number of holes, a fibrous, polymeric~sheet material characterized by small holes, and a hardenable resin binder material. The resin binder material is impregnated into the openings of the backing member and the fibrous, . , , polymeric.sheet material is compressed into the openings of the backing member to conform an integral. unitary, laminate liner.
U.S. Patent No. 5,612,107 to Sangani et al. discloses a composite construction which comprises a Layer of plasticized polymer film, a release-coated liner, and a plasticizer-resistant polymer back coating on the other surface of the release 'coated . . .. >. . _, liner B. ~ -Nonetheless.. improvements were desirable and are accomplished through the invention disclosed herein.
' '"'. _.. ~ ... . . .
Summar~r of the Invention -A liner for storing unvulcanized elastomeric materials includes a first end and a second end. The liner has a first portion extending from the first end of the liner to a first transition region in the liner. A second portion extends from the first transition region in the liner to the second end of the liner. The first portion of the liner is made of a first material and the second portion of the liner being made of a second material.
SU8SZ1ME SHEET (RULE 26) Unwlcanized materials tend to stick to the first portion of the liner at a first propensity for sticking and tend to stick to the second portion of the liner at a second propensity for sticking, with the first propensity for sticking being different than the second propensity for sticking.
Brief Descrietion of the Drawings .
Figure 1 is a schematic, side view of a liner 10, an elastomeric material 20 partially wound onto a roll 30. The liner 10 and elastomeric material 20 are shown larger that actual size in order better to show the invention.
Figure 2 is a chart illustrating certain technical data from tests on the invention.
Figure 3 is a schematic, plan view of one embodiment of the inventive liner 10.
Figure 4 is a schematic, plan view of a second embodiment of the inventive liner 10.
Disclosure of the Invention In the manufacture of several articles, among them the manufacture of tires, it is common to extrude or otherwise form unw(canized elastomeric materials into strips or sheets for inclusion later in the manufacturing process. Often, these unwlcanized components are stored in the form of strips. Because the components are tacky or sticky, they are separated from each other by a layer of material. For example, strips of unwlcanized elastomeric components are commonly separated from each other by a liner.
A liner is essentially a long, rectangular piece of cloth or other planar member.
Typically, the elastomeric strip is placed on the top surface of the liner and then one end of the liner/component combination is wound, thereby creating a spiral from a side view. For example, with reference to Figure 1, a component and liner in the process of being rolled up into a spiral is illustrated.
With continuing reference to Figure 1, a liner 10 includes a first end 12 and a second end 14. An associated elastomeric material 20 is placed upon an upper surface 16 of the liner .10. The liner 10 and elastomeric material 20 are shown in the process of being wound into a roll 24. From the side, as is illustrated in Figure 1, the end view of the roll 24 resembles a spiral pattern, with the first end 12 of the liner 10 being at the center of the spiral and successive layers of liner 10 and elastomeric material 20 being wrapped around the first end 12 of the liner 10.
With continuing reference to Figure 1, a problem commonly occurs when unwlcanized elastomeric material 20 is wound into rolls 24 as illustrated in Figure 1.
Typically, the roll 32 is suspended by some sort of cylindrical axis 30. As the diameter of the roll 24 increases, the weight of the elastomeric material 20 in the roll 24 can begin to crush the liner 10 and elastorneric material 20. Sometimes this crushing occurs in the upper portion of the roll 32. Usually the crushing occurs in the core of a roll of material 20 that is "enter-driven", meaning it is rotated by applying a torque to the center of the roll 32. Other times the crushing occurs in the outside . , layers, as is common in a "surface wound'' roll 32 of material. Sometimes this increased pressure works to increase the adhesion between the liner 10 and an elastomeric material 20 until. an undesirable condition, sometimes known as "stuck-to-liner" occurs. The "stuck-to-liner" can be more accurately described as the occurrence of adhesion between the liner 10 and the elastomeric material 20 at such a high level that separating the: liner 10 from the elastomeric material 20 at the tire building machine during the normal tire building process is difficult. In such cases, as a separate process, the elastomeric material is separated from the liner.
Because the "stuck-to-liner" requires a separate separating process, production time is wasted as the tire manufacturing process is slowed down. All of the attendant costs necessary by adding an additional step, with additional equipment, and additional floor space, are added to the cost of the tire building process.
A related, but separate problem also stemming from the "stuck-to-liner" is that of an unvulcanized elastomeric component which has lumps within it. The lumps are due to prematurely cured or vulcanized rubber due to an excessive heat history. The cured lump of rubber can commonly occur from reuse of scrap inner liner material.
This gives rise to the heat history.
The inventors having invented a system and a method of winding, unvulcanized, elastomeric materials into rolls 24 which greatly reduces the "stuck-to-liner" problem. ,... .. .
The inventors learnedl that a liner 10 manufactured from cotton cloth had significantly lower adhesion to an unvulcanized elastomeric tire component known as an inner liner. The inventors compared a cotton liner to a similar liner manufactured from polyester.
With reference to Figure 2, the inventors learned that the unvulcanized elastomeric inner liner component was significantly less likely to stick to a cotton liner. In Figure 1, the propensity for sticking between the cotton liner and the ' unvulcanized elastomeric inner liner is illustrated by the squares on the chart while the propensity for the unvulcanized inner liner to stick to the polyester liner is demonstrated by the circles on the chart. - In addition, the propensity to adhere is represented as a function of position within the roll 24.
As is clear from Figure 2, the cotton liner provides better release characteristics. However, the cotton liner material is approximately four times the cost of the polyester liner. The inventors have discovered a way to provide better performance with respect to the "stuck-to-liner" problem while providing cost advantages previously unavailable.
With reference to Figure 3, a hybrid liner 40 is disclosed. The hybrid liner - has a first portion 42 and a second portion 44. The first portion 42 has a first end 46 and a second end 48. The second portion 44 has a first end 52 and a second end 54.
In the embodiment of the hybrid liner 40 shown in Figure 3, the second end 48 of the first portion 42 is fixedly attached to the first end 52 of the second portion 44. In the preferred embodiment, the attachment is made by sewing the first portion 42 to the second portion 44, thereby creating a seam 56. The seam 56 is a line perpendicular to the longitudinal centerline CL of the hybrid liner 40. While this is the preferred embodiment of the hybrid liner 40, more elaborate designs may include a zone of transition 60. The zone of transition 60 might be a blend of the materials together, or it might be a diagonal straight line (one that is not generally perpendicular to the longitudinal centerline CL of the liner 40), or may be some sort of a curvilinear, non-liner line. While the zone of transition may be configured however the particular application requires, the preferred zone of transition for the hybrid liner 40 is a simple seam 56 which sews the second end 48 of the first portion 42 to the first end 52 of the .
second portion 44.
The first portion 42 of the hybrid liner 40 is made of cotton while the second 5 j PCT/US98/11069 portion 44 of the hybrid liner 40 is made of polyester. The elastomeric material 20 is wound onto the hybrid liner 40 so that the first end 46 of the first portion 42 is closest to the axis 30. In this way, the first portion 42 of the hybrid liner 40 is at the center of the roll 24, nearer the axis 30. Since it'is the center portion of the roll 40 where the "stuck-to-liner" problem is most likely to occur, the first portion 42 of the hybrid liner 40 is made of the relatively expensive cotton material. The second portion 44 is made of polyester, as the second portion of the hybrid liner 40 will be nearer the outer layers of roll 24 where the "stuck-to-liner" problem is less likely to occur.
With continuing reference to Figure 3, the link 62 of the first portion 42 is less than the length 64 of the second portion 44. Because of this difference in length, of course, cost savings accrue due to the invention.
The respective lengths 62, 64 should be adjusted with respect to each application. In the preferred embodiment, as applied by the inventors, the length 62 of the first portion 42 was 75 yards (68.6 meters) while the length 64 of the second portion 44 was 145 yards (132.6 meters).
With reference to Figure 4, a second embodiment of the invention is disclosed.
The embodiment shown in Figure 4 is especially suited for surface wound rolls.
For example, if the roll 24 is to be mounted to an A-frame, a storage device for such rolls 24 which is commonly knovvn in the art, the liners 10, 40 do not have to be rerolled after letting off on the tire machine and rolling up on the calender. As such, the cotton liner (the first portion 42) is only needed on one end of the hybrid liner 40 However, in a surface wound roll, unless the cotton liner is placed at each end of a hybrid liner, then the hybrid liner would have to be rerolled after letting off at the tire machine and rolling up on tile calender. Therefore, in the embodiment illustrated in Figure 4, a hybrid liner 70 has a first portion 72, a second portion 74, and a third portion 76. The operation amd function of the third portion 76 is essentially identical to that of the first portion 4:! illustrated in Figure 3 and discussed above.
The primary difference between the hybrid liner 70 shown in Figure 4 and the hybrid liner shown in Figure 3 is simply that the hybrid liner 70 shown in Figure 4 performs the desired advantages without she requirement of rerolling. In other words, a first end 80 of the first portion 72 can >~: affixed to the axis 30, or, a second end 84 of the third portion 76 can be affixed to the axis 30. The relative lengths of each of the first, second, and third portions 72, 74, 76 of the hybrid liner 70 are as described above regarding the hybrid liner 40.
Still other benefits and advantages of the invention will become apparent to those skilled in the art to which it pertains -upon a reading and understanding of the following detailed specification.
.,. . - , .
,. ,: .~, _ _ . . - -. ,~...;~;.:
Technical Field The invention pertains to the manufacture of articles utilizing tacky or sticky components, generally in strip or sheet form. One common application of the invention is in the tire manufacturing industry where unvulcanized elastomeric components are commonly extruded in strip or sheet form and are wrapped in liners until they are incorporated into.the tire during the manufacturing process. _ .
Bacl~ound Art ~~" ' It is known to store unvulcanized elastomeric tire components in.liners. It is also known fo manufacture liners of different materials, such as cotton and polyester.
U.S. Patent No. 4,OCI6,051 to Board, Jr. discloses a laminate liner to'be secured to a supporting surface. The liner comprises, in combination, a backing sheet -,.:.»:;.
member characterized by a large number of holes, a fibrous, polymeric~sheet material characterized by small holes, and a hardenable resin binder material. The resin binder material is impregnated into the openings of the backing member and the fibrous, . , , polymeric.sheet material is compressed into the openings of the backing member to conform an integral. unitary, laminate liner.
U.S. Patent No. 5,612,107 to Sangani et al. discloses a composite construction which comprises a Layer of plasticized polymer film, a release-coated liner, and a plasticizer-resistant polymer back coating on the other surface of the release 'coated . . .. >. . _, liner B. ~ -Nonetheless.. improvements were desirable and are accomplished through the invention disclosed herein.
' '"'. _.. ~ ... . . .
Summar~r of the Invention -A liner for storing unvulcanized elastomeric materials includes a first end and a second end. The liner has a first portion extending from the first end of the liner to a first transition region in the liner. A second portion extends from the first transition region in the liner to the second end of the liner. The first portion of the liner is made of a first material and the second portion of the liner being made of a second material.
SU8SZ1ME SHEET (RULE 26) Unwlcanized materials tend to stick to the first portion of the liner at a first propensity for sticking and tend to stick to the second portion of the liner at a second propensity for sticking, with the first propensity for sticking being different than the second propensity for sticking.
Brief Descrietion of the Drawings .
Figure 1 is a schematic, side view of a liner 10, an elastomeric material 20 partially wound onto a roll 30. The liner 10 and elastomeric material 20 are shown larger that actual size in order better to show the invention.
Figure 2 is a chart illustrating certain technical data from tests on the invention.
Figure 3 is a schematic, plan view of one embodiment of the inventive liner 10.
Figure 4 is a schematic, plan view of a second embodiment of the inventive liner 10.
Disclosure of the Invention In the manufacture of several articles, among them the manufacture of tires, it is common to extrude or otherwise form unw(canized elastomeric materials into strips or sheets for inclusion later in the manufacturing process. Often, these unwlcanized components are stored in the form of strips. Because the components are tacky or sticky, they are separated from each other by a layer of material. For example, strips of unwlcanized elastomeric components are commonly separated from each other by a liner.
A liner is essentially a long, rectangular piece of cloth or other planar member.
Typically, the elastomeric strip is placed on the top surface of the liner and then one end of the liner/component combination is wound, thereby creating a spiral from a side view. For example, with reference to Figure 1, a component and liner in the process of being rolled up into a spiral is illustrated.
With continuing reference to Figure 1, a liner 10 includes a first end 12 and a second end 14. An associated elastomeric material 20 is placed upon an upper surface 16 of the liner .10. The liner 10 and elastomeric material 20 are shown in the process of being wound into a roll 24. From the side, as is illustrated in Figure 1, the end view of the roll 24 resembles a spiral pattern, with the first end 12 of the liner 10 being at the center of the spiral and successive layers of liner 10 and elastomeric material 20 being wrapped around the first end 12 of the liner 10.
With continuing reference to Figure 1, a problem commonly occurs when unwlcanized elastomeric material 20 is wound into rolls 24 as illustrated in Figure 1.
Typically, the roll 32 is suspended by some sort of cylindrical axis 30. As the diameter of the roll 24 increases, the weight of the elastomeric material 20 in the roll 24 can begin to crush the liner 10 and elastorneric material 20. Sometimes this crushing occurs in the upper portion of the roll 32. Usually the crushing occurs in the core of a roll of material 20 that is "enter-driven", meaning it is rotated by applying a torque to the center of the roll 32. Other times the crushing occurs in the outside . , layers, as is common in a "surface wound'' roll 32 of material. Sometimes this increased pressure works to increase the adhesion between the liner 10 and an elastomeric material 20 until. an undesirable condition, sometimes known as "stuck-to-liner" occurs. The "stuck-to-liner" can be more accurately described as the occurrence of adhesion between the liner 10 and the elastomeric material 20 at such a high level that separating the: liner 10 from the elastomeric material 20 at the tire building machine during the normal tire building process is difficult. In such cases, as a separate process, the elastomeric material is separated from the liner.
Because the "stuck-to-liner" requires a separate separating process, production time is wasted as the tire manufacturing process is slowed down. All of the attendant costs necessary by adding an additional step, with additional equipment, and additional floor space, are added to the cost of the tire building process.
A related, but separate problem also stemming from the "stuck-to-liner" is that of an unvulcanized elastomeric component which has lumps within it. The lumps are due to prematurely cured or vulcanized rubber due to an excessive heat history. The cured lump of rubber can commonly occur from reuse of scrap inner liner material.
This gives rise to the heat history.
The inventors having invented a system and a method of winding, unvulcanized, elastomeric materials into rolls 24 which greatly reduces the "stuck-to-liner" problem. ,... .. .
The inventors learnedl that a liner 10 manufactured from cotton cloth had significantly lower adhesion to an unvulcanized elastomeric tire component known as an inner liner. The inventors compared a cotton liner to a similar liner manufactured from polyester.
With reference to Figure 2, the inventors learned that the unvulcanized elastomeric inner liner component was significantly less likely to stick to a cotton liner. In Figure 1, the propensity for sticking between the cotton liner and the ' unvulcanized elastomeric inner liner is illustrated by the squares on the chart while the propensity for the unvulcanized inner liner to stick to the polyester liner is demonstrated by the circles on the chart. - In addition, the propensity to adhere is represented as a function of position within the roll 24.
As is clear from Figure 2, the cotton liner provides better release characteristics. However, the cotton liner material is approximately four times the cost of the polyester liner. The inventors have discovered a way to provide better performance with respect to the "stuck-to-liner" problem while providing cost advantages previously unavailable.
With reference to Figure 3, a hybrid liner 40 is disclosed. The hybrid liner - has a first portion 42 and a second portion 44. The first portion 42 has a first end 46 and a second end 48. The second portion 44 has a first end 52 and a second end 54.
In the embodiment of the hybrid liner 40 shown in Figure 3, the second end 48 of the first portion 42 is fixedly attached to the first end 52 of the second portion 44. In the preferred embodiment, the attachment is made by sewing the first portion 42 to the second portion 44, thereby creating a seam 56. The seam 56 is a line perpendicular to the longitudinal centerline CL of the hybrid liner 40. While this is the preferred embodiment of the hybrid liner 40, more elaborate designs may include a zone of transition 60. The zone of transition 60 might be a blend of the materials together, or it might be a diagonal straight line (one that is not generally perpendicular to the longitudinal centerline CL of the liner 40), or may be some sort of a curvilinear, non-liner line. While the zone of transition may be configured however the particular application requires, the preferred zone of transition for the hybrid liner 40 is a simple seam 56 which sews the second end 48 of the first portion 42 to the first end 52 of the .
second portion 44.
The first portion 42 of the hybrid liner 40 is made of cotton while the second 5 j PCT/US98/11069 portion 44 of the hybrid liner 40 is made of polyester. The elastomeric material 20 is wound onto the hybrid liner 40 so that the first end 46 of the first portion 42 is closest to the axis 30. In this way, the first portion 42 of the hybrid liner 40 is at the center of the roll 24, nearer the axis 30. Since it'is the center portion of the roll 40 where the "stuck-to-liner" problem is most likely to occur, the first portion 42 of the hybrid liner 40 is made of the relatively expensive cotton material. The second portion 44 is made of polyester, as the second portion of the hybrid liner 40 will be nearer the outer layers of roll 24 where the "stuck-to-liner" problem is less likely to occur.
With continuing reference to Figure 3, the link 62 of the first portion 42 is less than the length 64 of the second portion 44. Because of this difference in length, of course, cost savings accrue due to the invention.
The respective lengths 62, 64 should be adjusted with respect to each application. In the preferred embodiment, as applied by the inventors, the length 62 of the first portion 42 was 75 yards (68.6 meters) while the length 64 of the second portion 44 was 145 yards (132.6 meters).
With reference to Figure 4, a second embodiment of the invention is disclosed.
The embodiment shown in Figure 4 is especially suited for surface wound rolls.
For example, if the roll 24 is to be mounted to an A-frame, a storage device for such rolls 24 which is commonly knovvn in the art, the liners 10, 40 do not have to be rerolled after letting off on the tire machine and rolling up on the calender. As such, the cotton liner (the first portion 42) is only needed on one end of the hybrid liner 40 However, in a surface wound roll, unless the cotton liner is placed at each end of a hybrid liner, then the hybrid liner would have to be rerolled after letting off at the tire machine and rolling up on tile calender. Therefore, in the embodiment illustrated in Figure 4, a hybrid liner 70 has a first portion 72, a second portion 74, and a third portion 76. The operation amd function of the third portion 76 is essentially identical to that of the first portion 4:! illustrated in Figure 3 and discussed above.
The primary difference between the hybrid liner 70 shown in Figure 4 and the hybrid liner shown in Figure 3 is simply that the hybrid liner 70 shown in Figure 4 performs the desired advantages without she requirement of rerolling. In other words, a first end 80 of the first portion 72 can >~: affixed to the axis 30, or, a second end 84 of the third portion 76 can be affixed to the axis 30. The relative lengths of each of the first, second, and third portions 72, 74, 76 of the hybrid liner 70 are as described above regarding the hybrid liner 40.
Still other benefits and advantages of the invention will become apparent to those skilled in the art to which it pertains -upon a reading and understanding of the following detailed specification.
.,. . - , .
,. ,: .~, _ _ . . - -. ,~...;~;.:
Claims (15)
1. A liner for storing unvalcanized elastomeric materials, the liner having a first end and a second end, and an associated width, length and longitudinal centerline, the liner comprising:
a first portion extending from the first end of the liner to a first transition region in the liner, the first transition region being between the first end and the second end of the liner; and, a second portion extending from the first transition region in the liner to the second end of the liner, the first portion of the liner being made of a first material and the second portion of the liner being made of a second material.
a first portion extending from the first end of the liner to a first transition region in the liner, the first transition region being between the first end and the second end of the liner; and, a second portion extending from the first transition region in the liner to the second end of the liner, the first portion of the liner being made of a first material and the second portion of the liner being made of a second material.
2. The liner of claim 1 wherein the associated unvulcanized materials tend to stick to the first portion of the liner at a first propensity for sticking, and the associated unvulcanized materials tend to stick to the second portion of the liner at a second propensity for sticking, the first propensity for sticking being different than the second propensity for sticking.
3. The liner of claim 2 wherein the first propensity for sticking is greater than the second propensity for sticking.
4. The liner of claim 2 wherein the first transition region is a line.
5. The liner of claim 4 wherein the first transition region is a straight line.
6. The liner of claim 5 where the first transition region is a line generally perpendicular to the longitudinal centerline of the liner.
7. A system for storing unvulcanized elastomeric materials, the system comprising:
A first liner, the first liner having a first end, a second end and an associated width, length and longitudinal centerline;
A second liner, the second liner having a first end, a second end and an associated width, length and longitudinal centerline, the first end of the second liner being positioned near the second end of the first liner, the first liner being made of a first material and the second liner being made of a second material.
A first liner, the first liner having a first end, a second end and an associated width, length and longitudinal centerline;
A second liner, the second liner having a first end, a second end and an associated width, length and longitudinal centerline, the first end of the second liner being positioned near the second end of the first liner, the first liner being made of a first material and the second liner being made of a second material.
8. The system of claim 7 wherein the associated unvulcanized materials tend to stick to the first liner at a first propensity for sticking, and the associated unvulcanized materials tend to stick to the second liner at a second propensity for sticking, the first propensity for sticking being different than the second propensity for sticking.
9. The system of claim 8 wherein the first propensity for sticking is greater than the second propensity for sticking.
10. A method of storing an associated strip of unvulcanized elastomeric material within liners, a first liner having a first end, a second end and an associated width, length and longitudinal centerline, a second liner having a first end, a second end and an associated width, length and longitudinal centerline, the method comprising the steps of:
Placing a first end of the associated strip of unvulcanized material onto the first liner near the first end of the first liner;
Winding the first liner and the associated strip of unvulcanized materials so that the first ends of the first liner and the strip of unvulcanized material are generally at the center of a spiral;
Continuing to wind the first liner and the associated strip of unvulcanized material until the second end of the first liner is brought into contact with the strip of elastomeric material;
Placing the first end of the second liner near the second end of the first liner;
and, Continuing to wind the associated strip of unvulcanized materials onto the second liner.
Placing a first end of the associated strip of unvulcanized material onto the first liner near the first end of the first liner;
Winding the first liner and the associated strip of unvulcanized materials so that the first ends of the first liner and the strip of unvulcanized material are generally at the center of a spiral;
Continuing to wind the first liner and the associated strip of unvulcanized material until the second end of the first liner is brought into contact with the strip of elastomeric material;
Placing the first end of the second liner near the second end of the first liner;
and, Continuing to wind the associated strip of unvulcanized materials onto the second liner.
11. The liner of claim 10 wherein the associated strip of unvulcanized material tends to stick to the first liner at a first propensity for sticking, and the associated strip of unvulcanized material tends to stick to the second liner at a second propensity for sticking, the first propensity for sticking being different than the second propensity for sticking.
12. The liner of claim 11 wherein the first propensity for sticking is greater than the second propensity for sticking.
13. A method of storing an associated strip of unvulcanized elastomeric material within a liner, the liner having a first portion, the first portion having a first end, a second end and an associated width, length and longitudinal centerline, the liner also having a second portion, the second portion having a first end, a second end and an associated width, length and longitudinal centerline, the method comprising the steps of:
Placing a first end of the associated strip of unvulcanized material onto the first portion of the liner near the first end of the first portion of the liner;
Winding the first portion of the liner and the associated strip of unvulcanized materials so that the first ends of the first portion of the liner and the strip of unvulcanized material are generally at the center of a spiral;
Continuing to wind the first portion of the liner and the associated strip of unvulcanized material until the second end of the first portion of the liner is brought into contact with the strip of elastomeric material;
Placing the first end of the second portion of the liner near the second end of the first portion of the liner; and, Continuing to wind the associated strip of unvulcanized materials onto the second portion of the liner.
Placing a first end of the associated strip of unvulcanized material onto the first portion of the liner near the first end of the first portion of the liner;
Winding the first portion of the liner and the associated strip of unvulcanized materials so that the first ends of the first portion of the liner and the strip of unvulcanized material are generally at the center of a spiral;
Continuing to wind the first portion of the liner and the associated strip of unvulcanized material until the second end of the first portion of the liner is brought into contact with the strip of elastomeric material;
Placing the first end of the second portion of the liner near the second end of the first portion of the liner; and, Continuing to wind the associated strip of unvulcanized materials onto the second portion of the liner.
14. The liner of claim 13 wherein the associated strip of unvulcanized material tends to stick to the first liner at a first propensity for sticking, and the associated strip of unvulcanized material tends to stick to the second liner at a second propensity for sticking, the first propensity for sticking being different than the second propensity for sticking.
15. The liner of claim 14 wherein the first propensity for sticking is greater than the second propensity for sticking.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US1998/011069 WO1999062695A1 (en) | 1998-06-01 | 1998-06-01 | Hybrid liners having reduced adhesion to an unvulcanized rubber material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2333102A1 true CA2333102A1 (en) | 1999-12-09 |
Family
ID=22267176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002333102A Abandoned CA2333102A1 (en) | 1998-06-01 | 1998-06-01 | Hybrid liners having reduced adhesion to an unvulcanized rubber material |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1084023A1 (en) |
| JP (1) | JP2002516786A (en) |
| AU (1) | AU7709898A (en) |
| CA (1) | CA2333102A1 (en) |
| WO (1) | WO1999062695A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2292532T3 (en) * | 2000-12-29 | 2008-03-16 | Pirelli Tyre S.P.A. | PROCEDURE AND APPLIANCE FOR THE MANUFACTURE OF TIRES. |
| WO2002102566A1 (en) * | 2001-06-15 | 2002-12-27 | Pirelli Pneumatici S.P.A. | Process for producing and storing an unvulcanized rubber product |
| ITMI20032313A1 (en) * | 2003-11-27 | 2005-05-28 | Nuova Pansac Spa | PROCEDURE AND PLANT FOR THE CONSTRUCTION OF A STRETCH, BREATHABLE POLYOLEPHIN FILM AND USE OF A MIXTURE OF POLYOLEFIN AND THERMOPLASTIC ELASTOMERS FOR THE PRODUCTION OF A STRETCHED BREATHABLE FILM |
| WO2009098160A1 (en) * | 2008-02-04 | 2009-08-13 | Société de Technologie Michelin | Method and device for making a reinforcement by winding a tape on itself |
| BR112017005775B1 (en) | 2014-09-30 | 2021-08-17 | Pirelli Tyre S.P.A. | TIRE FOR VEHICLE WHEELS, SEMI-FINISHED MATERIAL, PROCESSES FOR THE PRODUCTION AND STORAGE OF SEMI-FINISHED MATERIAL AND FOR THE PRODUCTION OF TIRES FOR VEHICLE WHEELS |
| JP7139784B2 (en) * | 2018-08-24 | 2022-09-21 | 住友ゴム工業株式会社 | take-up liner |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1543283A (en) * | 1921-12-19 | 1925-06-23 | Goodrich Co B F | Nonsticking liner for sheet rubber |
| US2067667A (en) * | 1934-04-14 | 1937-01-12 | Du Pont | Liner cloth |
| US2541498A (en) * | 1948-01-29 | 1951-02-13 | Goodrich Co B F | Polyethylene as a liner for tacky rubber |
| US5004635A (en) * | 1988-09-02 | 1991-04-02 | Bridgestone/Firestone, Inc. | Contoured liner for preassembled tire components |
-
1998
- 1998-06-01 EP EP98925066A patent/EP1084023A1/en not_active Withdrawn
- 1998-06-01 JP JP2000551936A patent/JP2002516786A/en active Pending
- 1998-06-01 CA CA002333102A patent/CA2333102A1/en not_active Abandoned
- 1998-06-01 AU AU77098/98A patent/AU7709898A/en not_active Abandoned
- 1998-06-01 WO PCT/US1998/011069 patent/WO1999062695A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| AU7709898A (en) | 1999-12-20 |
| EP1084023A1 (en) | 2001-03-21 |
| WO1999062695A1 (en) | 1999-12-09 |
| JP2002516786A (en) | 2002-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2291496C (en) | Method for preparing an innerliner of a pneumatic tire for the quick bonding of an electronic monitoring device | |
| US6679966B1 (en) | Liner with a tubular film that is coated with a nonwoven | |
| US5983799A (en) | Replaceable sleeve | |
| CA1231883A (en) | Method of manufacturing a shape from a composite material and shapes manufactured in accordance with the method | |
| US7131375B2 (en) | Offset lithographic printing press having seamed sleeved printing blanket | |
| EP1625931B1 (en) | Method of producing pneumatic radial tire | |
| EP1034948B1 (en) | Pneumatic tire and method of manufacturing the same | |
| US6769362B2 (en) | Printing blanket | |
| CA2333102A1 (en) | Hybrid liners having reduced adhesion to an unvulcanized rubber material | |
| US4832276A (en) | Polyurethane sleeve for tension reels | |
| US7094456B1 (en) | Hybrid liners having reduced adhesion to an unvulcanized rubber material | |
| US4756065A (en) | Paster roller | |
| US5992487A (en) | Pneumatic tire with double layer sidewall | |
| AU717784B2 (en) | Filled pneumatic tires and methods of manufacturing thereof | |
| US6645334B1 (en) | Tire manufacturing using a roll forming apparatus | |
| JP4198267B2 (en) | Winding liner for long raw rubber members | |
| USRE38468E1 (en) | Replaceable sleeve | |
| EP0454932A2 (en) | A method of processing, storing and utilizing sheets of elastomeric coated cords | |
| WO1999036270A1 (en) | Replaceable sleeve | |
| CN217073940U (en) | Carcass cord fabric and tire with same | |
| WO2000044547A1 (en) | Tire manufacturing using a roll forming apparatus | |
| NL2031790B1 (en) | Stock reel, wind-up station comprising said stock reel and method for winding-up a continuous strip | |
| WO1999011966A1 (en) | Renovative pipeliner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |