Method for attaching plastic film to surface of article
A technology of plastic film and articles, applied in the field of film attachment, to achieve the effect of increasing production and reducing operating time
Inactive Publication Date: 2014-01-22
张庆州
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Problems solved by technology
[0005] The second object of the present invention is to provide a method for attaching a plastic film to the surface of an article, which solves how to make the patterned film adhere smoothly along the three-dimensional shape of the surface of the article, especially how to overcome the curved surface , There is no wrinkle or break on the film at the junction of undulations and corners
Method used
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[0026] As shown in Figure 1 , the device of the present invention generally includes a lower mold 20 , an upper mold 40 , a vacuum system 10 connecting the upper mold 40 and the lower mold 20 , and a heating device 50 connected to the upper mold 40 . The upper mold 40 and the lower mold 20 can be relatively combined and kept airtight. An article 21 is positioned in the mold cavity 22 of the lower mold 20 , and a plastic film 31 is positioned in the mold cavity 42 of the upper mold 40 and corresponds to the surface of the article 21 , forming an intermediary space 30 therebetween. The plastic film 31 is prefabricated according to the three-dimensional shape of the surface of the object 21 , and the plastic film 31 has a three-dimensional shape corresponding to the surface of the object 21 . The vacuum system 10 controls the vacuuming operation of the lower mold 20 and the upper mold 40 respectively through two pipelines 11 , 12 and switches 13 , 14 . The vacuuming operation of...
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The invention discloses a method for attaching a plastic film to the surface of an article. The method comprises the following steps of 1, molding the plastic film into a three-dimensional shape which is defined according to the shape of the surface to be modified by the plastic film of an article; 2, putting the plastic film with the three-dimensional shape and the article into an airtight mold capable of realizing a vacuum environment; 3, heating the plastic film in the airtight mold to ensure that a bonding layer of the plastic film is changed into a viscose state from a solid state and the plastic film generates extensibility; 4, reducing the air pressure between the plastic film and the article to be in a negative pressure state to ensure that the plastic film and the bonding layer are attached to the surface of the article; 5, uniformly applying a pressure namely a mechanical pressure or gas pressure to the outer surface of the plastic film to ensure that the plastic film can be completely and flatly attached to the surface of the article and can extend in close joint along a camber, a convex part, a concave part and other irregular parts on the surface of the article.
Description
technical field [0001] The invention relates to the technical field of film attachment, in particular to a method for attaching a plastic film to the surface of an article. Background technique [0002] As for the method of adding patterns or patterns to the three-dimensional surface of an article, screen printing can be used. First, the pattern layer is printed on the surface of the article, and after the pattern layer is fixed on the surface of the article, the article and the pattern layer are formed into a predetermined three-dimensional shape by vacuum or hot pressing. [0003] One of the disadvantages of the above solution is that the printing material of the pattern layer needs to be carefully selected, preferably heat-resistant plastic material, so as to avoid damage to the pattern layer in the subsequent vacuum or thermoforming process. The second disadvantage is that the use of screen printing will limit the performance of the color, graphics, pattern, gloss, ligh...
Claims
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IPC IPC(8): B65C7/00
Inventor 张庆州
Owner 张庆州