JPS6339325A - Lamination of photosensitive dry film on base - Google Patents

Abstract

PURPOSE:To so constitute the title method that a thick base or an end part of the base or even the base having copper foil burrs does not get a hurt such as a laminating roll flaw, by a method wherein at the time of sticking of a photosensitive dry film to the base, an upper and lower laminating rolls are kept under a state where they do not come into contact with each other or even if they are coming into contact with each other pressure is not applied to the base at the time other than sticking of the film. CONSTITUTION:Normally laminating rolls 13 are kept under a state where they are noncontacting or even if they are contacting pressure is not applied to a base. A film 15 is kept adhering to the base 11 by taking timing through a timer so that the front end of the base is detected by a noncontacting or contacting detector 12, pressure is applied to the rolls 13 directly after passing of the front end of the base through an axial line of the upper and lower laminating rolls and the base 11 is clamped. Then the rear end of the base 11 is detected by the same method as the foregoing one further and the rolls 13 are made into an unclamped or decompressed state at the time directly before passing of the rear end of the base 11 through the axial line 13 of the upper and lower laminating rolls. The action is repeated every base to be loaded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method of laminating photosensitive lines and ilms onto a substrate in the process of forming a circuit on a printed wiring board.

(Circuit formation U,", 4% of conventional technology printed wiring board) - Wind up the protective film from the base 23, laminate it, wrap the entire board, heat and apply it. The upper and lower laminating rolls (English, '1, 11. Laminaire IO-Rule, 23
2 is a photosensitive dry film unwinding roll, 24 is a purulent film winding roll, 25 is an unclamp for pressurization, 2
6 is a photosensitive ('l try' film).

(Problem to be Solved by the Invention) When a board is placed between the lamination rolls that are in contact with this mechanism and are pressurized, if the board is thick or there is a copper foil edge etc. at the edge of the board. In some cases, the edges of the substrate may cause scratches, dents, etc. on the surface of the laminating roll.

If there are scratches, dents, etc. on the surface of the laminating roll, the adhesion of the film may sometimes cause air bubbles, wrinkles, etc. to appear between the film and the substrate.

The present invention provides a laminating apparatus in which the laminating roll is not damaged by the edge of the substrate.

(Means for Solving the Problems) In the present invention, when pasting a photosensitive dry film onto a substrate, the upper and lower laminating rolls are brought into contact with each other except when the film is pasted to prevent the edges of the board from damaging the laminating roll. Set it to 5 so that no pressure is applied even if the rollers or rollers are in contact with each other.

This will be explained with reference to FIG.

Figure 1 + AI (BIK As shown in the figure, normally the laminating rolls 13 are kept in a non-contact state or in a state where no pressure is applied even if they are in contact, and the front end of the substrate 11 is placed in a non-contact type on the laminating roll input side. Immediately after the front end of the substrate passes through the upper and lower laminating roll shaft legs A, pressure is applied to the roll 13.
The substrate 11 is clamped and the film 15 is pasted at the right time using a timer or the like.

Furthermore, as shown in FIG. 1(C), the rear end of the substrate 11 was detected using the same method as described above, and the roll 13 was unclamped or the pressure was released just before the rear end of the substrate passed through the shafts of the upper and lower laminating rolls 13. state. This operation is repeated for each board to be inserted.

In this way, in the present invention, ■The reflective nine-tone tube detects the inserted board.

■ After sensing the front edge of the board, set the timing with a timer and move the vertical roll axis &! After passing, the substrate is clamped and lamination begins.

■ After sensing the rear edge of the board, set the timing with a separate timer,
Unclamp the board just before the rear end of the board passes the axis.

As in, it is 1-.

(Effects of the Invention) By this method, a photosensitive dry film can be attached to a thick substrate or a substrate with # foil burrs or the like on the edge of the substrate without causing lamination roll scratches or the like.

[Brief explanation of drawings]

FIG. 1(5)tB)tcJ is a side view of the main parts of a laminating apparatus showing the method of the present invention, and FIGS. Explanation of symbols 11, substrate 12, substrate detection sensor 1 & laminating roll 14 Pressurizing air cylinder

Claims (1)

[Claims] 1. In the method of laminating a photosensitive dry film onto a substrate by continuously pressing the photosensitive dry film onto the substrate using a pair of laminating rolls, the laminating rolls are kept in a non-contact state or in a state where no pressure is applied even if they are in contact. Then, the front end of the substrate is detected by a detector installed on the input side of the laminating roll, and immediately after the front end of the substrate passes through the axes of the upper and lower laminating rolls, pressure is applied to the roll to clamp the substrate. A method for laminating a photosensitive dry film onto a substrate, characterized in that the rear end of the substrate is detected and the roll is unclamped or the pressure is released just before the rear end of the substrate passes through the axes of the upper and lower laminating rolls.