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Film for tire inner liner, and preparation method thereof

A technology of inner liner and tire, which is applied in the direction of pneumatic tires, tire parts, without a separate inflatable cushion, etc., can solve the problems that the inner liner does not have fatigue resistance, reduce thickness and weight, and reduce car mileage, etc. Achieving simple performance, improved performance, and increased mileage

Active Publication Date: 2013-05-08
KOLON IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, the known method has limitations in maintaining the tire's excellent air permeability and formability while sufficiently reducing the thickness and weight of the inner liner, and has a problem of using additional bonding rubber or the like to firmly bonded to the carcass plies inside the tire, which increases the weight of the tire and reduces the mileage of the car
In addition, innerliners prepared by previously known methods do not have sufficient resistance to fatigue, for example, cracks due to repeated deformation during tire manufacturing or while driving, etc.

Method used

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  • Film for tire inner liner, and preparation method thereof
  • Film for tire inner liner, and preparation method thereof
  • Film for tire inner liner, and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0126] (1) Preparation of base film

[0127] 60 wt% of a polyamide-based resin (nylon 6) with a relative viscosity of 3.4 and 40 wt% of a polyamide-based elastomer resin with a weight-average molecular weight of 100,000 (a copolymer of nylon 6 and polyethylene glycol using 50 wt% each Resin) was mixed, and the mixture was extruded through a circular die at 260° C. to prepare an unstretched base film having a thickness of 80 μm at a rate of 30 m / min, without stretching and heat-treated parts.

[0128] (2) Preparation of adhesive layer components

[0129] Resorcinol and formaldehyde were mixed at a molar ratio of 1:2, followed by condensation reaction to obtain a condensate of resorcinol and formaldehyde.

[0130] 12% by weight of a condensate of resorcinol and formaldehyde was mixed with 88% by weight of styrene / 1,3-butadiene / vinylpyridine latex to obtain a resorcinol / formaldehyde-latex mixture with a concentration of 20%.

[0131] (3) Preparation of film for tire inner liner...

Embodiment 2

[0134] A film for a tire innerliner was prepared by the same method as in Example 1 except that 50 wt% each of the polyamide-based resin and the polyamide-based elastomer resin were used in the step of preparing the base film.

Embodiment 3

[0136] In addition to changing the contents of resorcinol and formaldehyde condensate and styrene / 1,3-butadiene / vinylpyridine latex to 15wt% and 85wt% respectively in the adhesive layer components, and the A film for a tire innerliner was prepared by the same method as in Example 1 except that the adhesive layer was formed to a thickness of 1.4 μm.

[0137] 4. Embodiment 4

[0138] In addition to changing the contents of resorcinol and formaldehyde condensate and styrene / 1,3-butadiene / vinylpyridine latex to 15wt% and 85wt% respectively in the adhesive layer components, resorcinol A film for a tire innerliner was prepared by the same method as in Example 1 except that the concentration of phenol / formaldehyde-latex was changed to 25%, and the adhesive layer was formed to a thickness of 1.6 μm.

[0139] 5. Embodiment 5

[0140] In addition to changing the contents of resorcinol and formaldehyde condensate and styrene / 1,3-butadiene / vinylpyridine latex to 15wt% and 85wt% respecti...

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Abstract

The present invention relates to a film for a tire inner liner comprising: a base film comprising a copolymer or a mixture of a polyamide-based resin and a polyether-based resin; and an adhesive layer comprising a resorcinol-formalin-latex (RFL)-based adhesive, and a preparation method thereof.

Description

technical field [0001] The present invention relates to a film for a tire innerliner and a method for producing the same, and more particularly, to a film for a tire innerliner and a method for producing the same, which can exhibit a thin thickness Excellent gas barrier properties, thereby enabling lightweight tires and improved car mileage, the film can be firmly bonded to the tire carcass layer, and can exhibit excellent moldability and fatigue resistance, etc. Background technique [0002] Tires bear the weight of the car, absorb shock from the road, and transmit the car's driving and braking forces to the ground. In general, tires are fiber / steel / rubber composites and have features such as figure 1 structure shown. [0003] Tread (1): The part that contacts the road surface. It should provide the friction required for actuation, have good wear resistance, withstand external impact, and generate a small amount of heat. [0004] Carcass Ply, or Carcass (6): The layer o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J121/02C09J161/12C08J5/18B60C5/14C09J7/22C09J7/20
CPCC08G69/40C08G8/22C09J7/026C09J161/12C08G2261/12B60C5/14C08L71/00C08L77/00B60C2005/145C09J2407/00C09J2461/00C09J2471/006C09J2477/006C09J7/20C09J7/22Y10T428/266Y10T428/24967
Inventor 全玉花金基雄郑一
Owner KOLON IND INC
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