JPS59156469A - Formation of lubricative coating film on glass sliding member - Google Patents

Abstract

PURPOSE:To enable to form a lubricative coating film in a manufacturing line, by applying a liquid lubricant dissolving synthetic resin in it onto a predetermined lip part during the time a glass sliding member after being formed is existent under a heat retaining condition so that said lubricant is dried up with remaining heat in the member. CONSTITUTION:The manufacturing line is one for manufacturing a glass sliding member, e.g. a weather strip material, in which a bright metal plate such as stainless steel is integrally embedded. A resin tape a2 is stuck onto the surface of a stainless steel strip a1 at first. Thereafter, a liquid adhesive agent is applied onto a necessary part other than the part where the resin tape a2 is prestuck. After the adhesive agent is baked, the strip material is bent into a form of L- shaped cross section. The strip material after being bent is subjected to the treatment to reactivate the adhesive agent, and soft PVC is extruded onto said strip material by an extruder 7 to adhesively form the lip part L of said soft PVC. A liquid lubricant to be applied onto the strip material from an applicator 8 in the following line can be rapidly dried up by utilizing heat retained during the forming.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a weather strip, a glass launch channel, etc., in which a lip portion such as a movable glass is brought into contact with a vehicle such as a vehicle.
2. The attached member C is hereafter referred to as the "glass sliding contact member."

This invention relates to a method for forming a slippery film on a glass sliding member, which forms a slippery skin that allows smooth sliding contact with the glass on its lip surface.

BACKGROUND ART Conventionally, in an automobile as shown in FIG. 1A, a glass sliding member W is mounted around a movable glass G.

W', C is synthetic Komuya soft PVC in Figure 2 a, b.

After extrusion molding into a predetermined cross-sectional shape as shown by 0 and cutting it into a certain length of, for example, about 1 m, the lip part that comes into contact with the glass G is coated with roll coating or Applying adhesive and then planting countless piles of nylon, etc. with an electrostatic flocking device is a history (the baking process is done through a second baking oven, or the flocking process is done). Since it is not good, prepare two flocked nylon pile sheets C, coat the surface of the lip L with a solution containing nylon, and perform baking treatment.
A smooth surface S is formed.

However, in both of these methods, the glass sliding contact members w, w'
Since the smooth surface S is formed in a separate line from the step of forming . In addition, since a long heating and baking furnace is used, it takes up an extremely large amount of space, and the equipment costs are also high.
2. Since the glass sliding contact members W, W', and C are completely cooled to room temperature, the baking process is performed, and the baking process involves a large amount of IE power consumption.

DISCLOSURE OF THE INVENTION An object of the present invention is to provide a method for forming a clear surface film on a glass sliding contact member, which is improved in order to eliminate the above-mentioned drawbacks.

That is, the manufacturing method of the lubricant film according to the present invention (in the second step), the glass sliding contact members such as weather strips and glass launch channels are heated in a reheating state after molding (in the second step) By applying the lubricant on the specified lip surface and drying and solidifying the lubricant with the residual heat of the glass sliding contact member, it is possible to form a slippery film in the manufacturing line of the glass sliding contact member. It is possible to save as much heat as possible during dry assimilation.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The best mode for carrying out the invention will be described below based on the embodiments shown in FIGS. 3 to 9.

The manufacturing line shown in Figure 3 is for manufacturing glass sliding members such as Unizarst 9F 1M, which has a bright metal plate such as stainless steel integrally embedded inside as shown in Figure 2a.
During this same process, 7,000 pieces of the lip surface (one smooth skin) are formed.

To explain this coconut line as a whole, uncoiler 1
The stainless steel strip a1 of a certain width is continuously fed out (twice), and the stainless steel strip a
A synthetic resin tape made of polyethylene (see Figure 4 C) is applied to the surface of the plastic tape J2 (2 is a soft pvct*) (see Figure 4 C). Adhesive aj is coated with an applicator 3 such as a roll coater (see Figure 4), and the adhesive a3 is baked with a dry baking machine 4, and then stainless steel strip material is continuously formed with a cold roll forming machine 5. Then bend and form the cross section into an abbreviated shape (4th step).
(See Figure C). The bent strip material is subjected to a heat treatment to reactivate the adhesion agent a4 in a heater 6, and is heated to soften the soft PVC that forms the lip part in an extruder 7 having a crosshead extrusion dia a. By extrusion adhesion, a weatherstrip material with an integrated lip portion is formed (see FIG. 4C). The soft PVC resin that forms this lip part is [Zanbrain (1 power supply name):
Mitsubishi Monzant Chemical (Hagi-, 1 + Tsukiya [Sumiflex (trade name): Sumitomo Bakelite (made in the state) has elasticity,”
It is suitable for use due to its flexibility (2).After extrusion molding of the lip part, the weather strip material C2 is designed so that a liquid lubricant is applied by the coating device B, and the cleaning agent is applied to the weatherstrip material C2. After being dried in a heating device 9 using an infrared lamp or hot air C, it is cooled through a water-cooled califiation device 10 and a cooling water tank 11, and transported backwards by a belt-type take-up device 12 to be placed in a press, etc. The cutting device 13 cuts to a certain size (=2). This production line is
When forming a glass launch channel C as shown in Figure C, C-
Since the old core 81 needs f, it is heated 4 from the uncoiler l.
No film is formed up to 6, and in the extruder 7, a straight die is used in place of the extrusion molding die a.

As described above, in this manufacturing line, a liquid lubricant is applied to the continuous weatherstrip material after extrusion molding of the lip part, and a slippery film is formed in the same manufacturing process as the weatherstrip. In addition, by applying the molding passion of weather stripping, we are able to dry and assimilate the smooth skin.

Polyol 2 is used as a lubricant for forming a slippery film on strings.
0! IA, 80 parts of ethyl acetate is mixed with 2 to 3 parts of fine particles of tetrafluoroethylene, and further (about 10 parts of dimethyl ethyl ketone)
There is a mixture of a solution (A) diluted with 0 parts and a solution (B) mixed with about 50 parts of methyl ethyl ketone using 50 parts of isocyanate as a diluent in a ratio of about A:B-1:1. Although this lubricant has started to polymerize to some extent in the paint tank, it can be rapidly polymerized when applied to the lip portion Ll which has been extruded from the extruder 7 and is stagnant. After extrusion molding, the lip portion is exposed to the atmosphere and cooled from the outer surface, but the heat usually remains at 150°C to 160°C. When a lubricant is applied to the lip surface of the kernels, the solvents methyl ethyl ketone and ethyl acetate evaporate, and the polyurethane acts as a binder, forming a film of fine particles of tetrafluoroethylene. Note that polyamide resin can be used instead of tetrafluoroethylene as the fine particles having a smooth surface.

Lubricant applicator! f8° [is in front of the spray coating device (see Figures 5 a and b) or on the roll coater (see Figures 6 a and 6).
b) can be used.

The spray coating device is housed inside an outer box 1 (H) having a substantially rectangular shape.The outer box 1 has an opening JO2, 103 that is slightly larger than the outer shape of the Waley strip material. At least one side of the outer box 101 can be opened and closed with a hinge 104 (formed of two lid plates 105) in order to check the processing status of the weather stripping material passing through. A painting gun 10FI is mounted on the rod 106 via a holder 107, and the gun 108 is used to rotate the weatherstrip material (up and down, left and right) according to the shape of the weather strip material to be coated with the holder 107 (2 rotations). The painting gun 108 has a tube 109 for supplying clean (-filtered) compressed air and a tube 110 for supplying paint, and the tube 110 can be connected to a paint tank (not shown). The paint tank is configured to be able to atomize one type of paint.The paint tank has an internal stirring device, and air pressure is applied inside the tank to apply a paint gun 108 (any device that can deliver two types of paint). An exhaust pipe is connected to the bottom of the box 101,
An exhaust fan 112 is provided inside the exhaust fan 112 to enable forced exhaust air. Also, a C filter 113 is removably installed between the exhaust fan 112 and the paint gun. Depending on the spraying direction of the coating gun 108, this filter 113 may be installed in the horizontal direction (two may be installed to exhaust the air). The amount of lubricant sprayed can be easily adjusted, and the direction of the sprayed lubricant can be changed as appropriate to the shape of weather strips w and w', making it suitable for shaping the lubricant film.

The roll coater is constructed by arranging a plurality of feed rollers 202 in the horizontal direction C of the machine frame 201, and arranging an upper C second presser roll 203 facing the feed rolls 202 on the entrance side and the exit side. The side guide plate 204 (transfers the weather stripping material in the horizontal direction (two-branch pressure). The feed rollers 202 are connected to two identical drive monitors (not shown) C and fixed at a constant speed. The presser roll 203 rotates at a high speed, and the presser roll 203 is configured as an idle roll so that it can be rotated in accordance with the rotation of the feed roller 202. A second coating roll 205 is arranged. Liquid lubricant is applied onto the circumferential surface of this coating roll 205 (-) from a storage tank 206 via a transfer roll 207. A doctor knife 208 is placed in contact with the roll 205 and scrapes off excess lubricant adhering to the circumferential surface of the coating roll 205.

Near the front side of the coating roll 205, there is a push-up guide 20 that pushes the lip of the weather strip material upward (in two positions).
9 and 209 are arranged in two stages (upper and lower). Shoes 210 may be used in place of or in conjunction with the rollers.In this roll coater, the peripheral surface of the coating roll 205 is pushed up and supported by the push-up guides 2o9 and 209, respectively. Because of the two-slide contact, when using any of these applicators that can apply liquid lubricant, the position at which the lubricant is applied differs depending on the surface temperature of the lip and the type of solvent used. If the lubricant is applied when the temperature of the protrusion is still much higher than the boiling point of the solvent used, the solvent will instantly evaporate and a good coating layer will not be obtained, and vice versa. This is not preferable because the solvent cannot be easily spread out.Preferably, the temperature at the lip is slightly higher than the boiling point of the solvent, so this is almost the same case.In the coating device 8 described above, the coating gaff The spraying distance can be changed by adjusting the height of the extruder 108 appropriately (this can also be done by selecting a solvent with a boiling point close to that of the extruder). Temperature changes can be easily measured with a commercially available surface thermometer.

When the polymerization is less than half due to the calorific value of the weather strip, the polymerization is accelerated by heating in a 4ilti oven 9 (see Fig. 7).The drying oven 9 is recessed with a box-shaped outer box 30. Passage holes are provided on the inlet and outlet sides of the weatherstrip. This outer box 301 is preferably filled with a heat insulating material 302 such as asbestos or glass core to have heat retention capacity (2), and one side has an opening/closing lid 303 for easy confirmation of heat treatment (2). A plurality of infrared lamps 304 are provided inside the outer box 301 (secondly, around the lip of the weather strip).
By adjusting the angle, you can freely adjust the distance from the Quesast+7 knob. Further, depending on the cross-sectional shape of the weather strip, there may be a blind spot where infrared rays cannot be irradiated, so a hot air blower 305 is provided at the top of the outer box 301 in preparation for such a case. Furthermore, an exhaust pipe 307 that communicates with the opening 306 is provided at the bottom of the outer box 301 so that forced exhaust is performed in the same way as the coating device 8. Exhaust pipe 111 (two exhaust pipes 111 may be connected to share the exhaust fan 112).

A cold section caplation device jiJO is placed next to this classroom ￥P9, but this device 10 (see Fig. 8) can be separated into upper and lower parts, and when both are connected, the C
: has a passage slightly larger than the cross-sectional shape of the continuous weather strip inside, and also has cavities 4o3゜4()4 for accommodating cooling water injected from the population 4(11, 402).These cavities 403. Continuing from 404, a large number of small through holes 405 are provided in the thick part of the frame, and cooling water is sprinkled onto the weather strip through these through holes 405 to perform a cooling process.

Thus, in the method of forming a slippery film on a glass sliding contact member, the slippery film is formed in the weatherstrip molding process (sequence C: two steps are performed), and the lip part of the weatherstrip is molded. Later, a slippery film H is formed on the lip portion in the passionate state (see Fig. 9).

Effects of the Invention As described above, according to the method of forming a slippery skin according to the present invention (1), it is possible to reduce the production line shrinkage in order to form a slippery film on the nip part as well as forming a glass sliding contact member.小 = J No,
In addition, since the passionate state can be applied after the lip portion is formed, it is possible to reduce power consumption and to perform an efficient process of forming a slippery film.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram showing the installation opening of the crow sliding contact member, Figure 2
Figures a-C are explanatory diagrams showing the spraying state of the glass sliding contact member;
3I81 is a process diagram for forming a clear surface film in series with the glass sliding contact member according to the present invention g1, FIGS. a, b are explanatory diagrams showing one example of the smooth surface film forming process, FIGS. 6 a, b are explanatory diagrams of another example of forming a smooth surface film,
FIG. 7 is an explanatory diagram showing the heat treatment process of the smooth surface coating, FIG. 8 is an explanatory diagram showing the same cooling treatment process, and FIG. 9 is an enlarged sectional view of the same smooth surface coating. w, w', c Ni glass sliding contact member, L: lip portion, G: movable glass, 8: extrusion molding machine, H: smooth surface film. Patent applicant: Hashimoto Forming Kogyo Co., Ltd. Written to Itomori Neyu (Method) 1, !l (Reference Patent Application No. 57-206598 2, Title of Invention: Formation of slippery film on glass sliding contact member) Method 3: Relationship with the case of the person making the amendment Patent applicant name Name Hashimi Forming Industry Co., Ltd. 1 Meiwa 59 Year 3
[Fig. 1st 4th
Figures 1 a-dJ are corrected.

Claims (3)

[Claims] (1) When a glass sliding contact member, such as a weather strip or glass launch channel, is in a heat-extinguishing state after being molded, the lip portion of which comes into contact with the movable glass, A method for forming a slippery film on a glass sliding contact member, comprising: applying a lubricant (ii) drying and solidifying the lubricant with residual heat during molding of the glass sliding contact member; (2) The method for forming a clean surface film according to claim 1, wherein preheating is performed after application of the lubricant. (3) The method for forming a slippery film according to claim 1, wherein a mixed solution of polyol and isocyanate mixed with slippery fine particles is used as the lubricant.