JPH0487635A - Illuminator - Google Patents

Abstract

PURPOSE:To manufacture the high quality product by forming the carrying-in part of the base member in a liquid-tight state with the photosensitive solution and also forming the carrying-out part of the base member in the enclosure so that it can be carried in an air-tightly sealed state with the sending-out part member of the base member. CONSTITUTION:An insert gas is introduced into the enclosure 1 and carries-in the base member 16 coated with the volatile photosensitive solution into the enclosure and irradiated with the light from the light source 11, thereby executing the photopolymerization reaction of the photosensitive solution. In this case, the carrying-in part 6 of the base member 16 in the enclosure 1 is formed in a liquid-tight state with the photosensitive solution, and also the carrying-out part 9 of the base member 16 in the enclosure 1 is formed so as to be transportable in the air-tightly sealed state by the sending-out part members 7, 8 of the base member 16. Consequently, the useless evaporation of the volatile photosensitive solution is suppressed, thereby enabling the manufacture of the high quality products.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is directed to the use of a photosensitive liquid (photopolymerized A photopolymerization reaction (
This invention relates to a light irradiation device for forming a photopolymerized product by polymerization.

[Prior Art] Conventionally, as this type of light irradiation device, one shown in FIG. 2, for example, is known. According to this, the light irradiation device is composed of a light irradiation section A and a coating section B, and the light irradiation section A is roughly composed of a light source section C and a housing provided with a light irradiation chamber (inert chamber) De. The housing is connected to the coating section B.

Here, the coating section B has a volume between the casing and the track, and has two rolls F above and below to allow the web E to pass through.
A liquid reservoir I in which a photopolymerizable monomer liquid H. is stored is provided at the contact portion of both rolls F and G.

In addition, the housing is provided with a slit-shaped carry-in part 1 and a slit-shaped carry-out part for guiding the web E, respectively, at the connection part with the coating part B and on the opposite side thereof. ,
The inert chamber DC is provided with an inlet J for introducing an inert gas such as nitrogen gas.

With this structure, the web E is coated with the monomer liquid H when it passes between the rolls F and G in the coating section B, and after passing through the carry-in section D1, the web E is coated with the monomer liquid H. The coated monomer liquid H undergoes a photopolymerization reaction due to light irradiation from the light source C, forming a paste-like adhesive layer as a photopolymerized product. is formed.

In addition, it is necessary to introduce a high-speed airflow of inert gas into the interior of the housing to create a low oxygen concentration atmosphere (for example, 20 m3/Hr) in order to promote the photopolymerization reaction, and the loading section Da and the unloading section are Db is formed in a slit shape to maintain the low oxygen concentration atmosphere.

[Problem to be solved by the invention] However, in the configuration of the above-mentioned prior art, after the web E is coated with monomer, the web E moves a predetermined distance within the coating area B, and then After passing through the narrow introduction section D2,
The irradiation chamber. Is it monomer that is being brought in? M.H.
It takes a considerable amount of time from coating to the photopolymerization reaction, and the amount of evaporation of volatile liquid H is large (for example, 3~7/
m'), there is a problem.

Such unnecessary evaporation of the monomer liquid H changes the originally expected composition of the monomer liquid H within the housing, deteriorating the quality of the adhesive layer of the product, or causing damage to the front and back surfaces of the base material. The difference in the amount of evaporation between the two surfaces causes a problem in that adhesive layers with the same performance (adhesive force, holding force) cannot be formed on the front and back surfaces.

In order to solve the problems of the prior art described above, the present invention provides a light irradiation device that can suppress unnecessary evaporation of a volatile monomer liquid as much as possible and can manufacture high-quality products. The purpose is to

[Means for Solving the Problems] In order to achieve the above object, the present invention introduces inert scum into a housing, and carries a base material coated with a volatile photosensitive liquid into the housing. In the light irradiation device configured to carry out a photopolymerization reaction of the photosensitive liquid by irradiating light from a light source part, the loading part of the base material in the housing is formed in a liquid-tight state by the photosensitive liquid. The base material unloading section in the housing is formed such that the base material can be unloaded in an airtight state by a delivery member.

[The working base material is coated with a photosensitive liquid immediately before being transported into the housing,
When the photosensitive liquid passes through the loading section, the photopolymerization reaction of the photosensitive liquid immediately proceeds due to the light irradiation from the light source section, so that the photopolymerization reaction of the photosensitive liquid is carried out without almost evaporating within the housing.

[Embodiment] Fig. 1 shows an embodiment of the present invention, in which a housing 1 is formed into a horizontally long box shape, and a knife coater is installed at one end (the left end in the figure) of the housing 1. 2 and a back roll 3 are provided at upper and lower positions, and a liquid reservoir 5 for a monomer liquid, which is a volatile photopolymerizable photosensitive liquid, is formed between these and the receiving plate 4. the knife coater 2, the back roll 3,
The liquid reservoir section 5 constitutes a base material carrying-in section 6, and the narrow gap formed between the tip of the knife coater 2 and the surface of the back roll 3 is made liquid-tight by the forward bending coating liquid. is in a state.

On the other hand, at the other end of the housing 1 (the right end in the figure), a release roll 7 and a mating roll 8 are arranged vertically to form a base material discharge section 9, and the contact surface between the rolls 78 is It is airtight.

That is, the housing 1 has a base material carrying-in section 6 and a base material carrying-out section 9.
However, the entire structure is airtight.

On the other hand, a Pyrex glass plate 10 is mounted on the upper part of the housing 1.
is provided, and a light source section 11 is provided above the glass plate 1o. Further, a cooling device 12 is provided below the inert chamber 1a inside the housing 1 so as to face the glass plate 10, and a cooling device 12 is provided inside the housing 1 near the loading port 6. An inlet 13 for active gas (nitrogen gas) is provided.

Note that below the back roll 3, a base material roll 14 and a release paper roll 15 are provided, and the base material nonwoven fabric 16 unwound from the base roll 14 passes through a relay roll 17. Furthermore, the release paper 18 unwound from the original fabric roll 15 is wound around the back roll 3 via a relay roll 19, respectively.

A winding roll 20 is provided below the carrying-out section 9, and the double-sided tape as a product carried out from the carrying-out section 9 is wound up via a relay roll 21.

Since this embodiment is configured as described above, the base material 16
When the paper is wound around the back roll 3 and passes through the liquid reservoir 5, the liquid is applied to both sides. When the base material 16 coated with the monomer liquid is carried into the inert chamber a from the carry-in section 6, the photopolymerization reaction of the monomer liquid immediately proceeds due to light irradiation from the light source section 11, and the monomer liquid is carried out. The photopolymerization reaction has sufficiently progressed before reaching the mold release roll 7 and the adhesive roll 8 on the side, and an adhesive layer having the desired adhesive strength is formed on the base material 16.

Note that when the base material 16 is carried into the inert chamber a, inert gas (arrow P) is released into the inert chamber a through the inlet 13; Since the photopolymerization reaction of the above monomer liquid starts immediately, there is almost no evaporation of the monomer liquid (for example, 0.5 to Ig
/m2), and since the inside of the casing 1 is airtight, the inert gas inside the casing 1 hardly leaks to the outside, so that the low oxygen concentration atmosphere inside the inert ila is sufficiently maintained. Therefore, the airflow velocity of the inert gas sent into the inert chamber a through the inlet 13 can also be reduced (for example, 3 m3/Hr).

[Effects of the Invention] As described above, according to the present invention, an inert gas is introduced into the housing, a base material coated with a volatile photosensitive liquid is carried into the housing, and light is irradiated from the light source section. In the light irradiation device configured to perform a photopolymerization reaction of the photosensitive liquid, the introduction portion of the base material in the housing is formed in a liquid-tight state by the photosensitive liquid, and The base material carrying out section is characterized in that the base material can be carried out in an airtight state by an exit member, so that the photopolymerization reaction starts immediately after the photosensitive liquid is applied to the base material. At the same time, only a small amount of inert gas is introduced into the housing, so the amount of evaporation of the earthwork fluid is suppressed as much as possible, and it is also suppressed as much as possible on both the front and back sides of the base material, so that the desired A high-quality product with adhesive strength, holding strength, etc., is obtained, and it is useful when applied to the production of double-sided tape.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is a schematic configuration diagram showing the conventional configuration. 1... Housing, 1a... Inert chamber (inside the housing), 5.
...Liquid storage section, 6...Carry-in section, 9...Carry-out section, 11.
...Light source part, 16...Base material. Patent applicant: Sekisui Chemical Co., Ltd. Representative Hiroshi 1) Kaoru

Claims (1)

[Claims] (1) Introducing an inert gas into the housing, carrying a base material coated with a volatile photosensitive liquid into the housing, and irradiating it with light from a light source to cause a photopolymerization reaction of the photosensitive liquid. In the light irradiation device configured to carry out the following, an inlet portion of the casing for carrying in the base material is formed in a liquid-tight state with the photosensitive liquid, and a carrying-out portion for the base material in the casing is configured to carry out the base material. A light irradiation device characterized in that it is formed so that it can be carried out in an airtight state using a delivery member.