Method for producing double point stretching reinforced plastic film
A technology of reinforced plastics and production methods, applied in the field of plastic film processing, can solve the problems of unadjustable stretching station and stretching ratio, poor longitudinal performance of stretched film, and small wrapping area, so as to increase wrapping performance and increase durability Temperature and barrier properties, wide-ranging effects
Inactive Publication Date: 2006-11-08
浙江绍兴华东包装有限公司
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Problems solved by technology
The disadvantages of this processing method are: there is only one stretching station, neither the stretching station nor the stretching ratio can be adjusted, the longitudinal performance of the stretched film is poor, the thickness of the substrate is large, the wrapping area is small, and the unit cost is high
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[0021] A method for producing a double-point stretched reinforced plastic film according to the present invention, the base film is first installed on the unwinding machine 4 . The base film can run smoothly during the stretching process by the tension regulator 6, which is composed of two rollers. Then it is preheated by the preheater 2 to meet the deformation temperature requirement. The preheater 2 is composed of 4 rollers. Then through the longitudinal stretching of the first stretching machine 11 and the longitudinal stretching of the second stretching machine 12, both the first stretching machine 11 and the second stretching machine 12 are composed of two stretching rollers. At this time, in order to better realize online control of stretching parameters and meet different requirements of the market, the base film can be heated by infrared heater 8, and the stretching ratio of the two stretching stations can be adjusted according to the product It is required to adjust ...
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The invention discloses a production method of a two-point stretching reinforced plastic film with two stretching stations and adjustable stretching process. Firstly, the base film is installed on an unwinding machine; Preheating; then two-point stretching of the base film by two stretching machines, and each stretching station and stretching ratio can be adjusted; and then heat treatment and corona treatment of the stretched base film by a sizing machine , and finally after cooling, it is drawn and rolled by a winder. Compared with the prior art, the present invention is applicable to the secondary stretching and setting of various films, and the stretched film has high strength, good transparency and gloss, strong temperature resistance and barrier property; it has excellent wrapping performance, It has broad market prospect and economic value in the secondary processing technology of plastic film.
Description
1. Technical field [0001] The invention belongs to a plastic film processing method, and relates to a secondary processing method of a high-strength film, in particular to a production method of a double-point tensile strengthened plastic film. 2. Background technology [0002] At present, the existing secondary processing methods of plastic films all adopt a single-point, fixed stretch ratio structure, which is mainly used for the production of PVC heat-shrinkable film. The disadvantages of this processing method are: there is only one stretching station, the stretching station and the stretching ratio cannot be adjusted, the longitudinal performance of the stretched film is poor, the thickness of the substrate is large, the wrapping area is small, and the unit cost is high. 3. Contents of the invention [0003] The object of the present invention is to provide a comprehensive and good stretching method for reinforced plastic film. This stretching method utilizes the coo...
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IPC IPC(8): B29C55/16B29C71/00B29L7/00
Inventor 李彩虹
Owner 浙江绍兴华东包装有限公司