CN1290685C - Method and device for manufacturing fluorine-containing resin composite sheet - Google Patents

Abstract

A manufacturing approach and its apparatus of the composite board of fluororesin, mainly utilize the radiant heat source to illuminate the fluorine-containing resin board and glass fiber cloth to the temperature above the melting point of fluororesin, and then through the temperature control roller train in the apparatus, the lamination fluorine-containing resin board and glass fiber cloth, make the above-mentioned material weld and combine into the composite board of fluorine-containing resin; in the production process, under the condition of low tension, the single side of the fluorine-containing resin plate is locally heated to the temperature above the melting point of the fluorine-containing resin, so that the negative factors of the influence of heat and stress on the characteristics of the fluorine-containing resin are reduced, and the fluorine-containing resin composite plate with the optimal performance is obtained.

Description

Method and device for manufacturing fluorine-containing resin composite sheet

technical field

The invention relates to a method and a device for manufacturing a fluorine-containing resin composite plate.

Background technique

Because fluorine-containing resin has the characteristics of excellent temperature resistance, chemical corrosion resistance and high-purity cleanliness, it is very suitable for the production, storage and transportation of high-purity chemicals in modern industries; such as manufacturing semiconductor products. The high-tech industry has very strict and high standards for the purity of the chemicals used and the cleanliness of the containers containing these chemicals.

Common fluorine-containing resin materials include polytetrafluoroethylene (PTFE), tetrafluoroethylene and perfluoropropyl vinyl ether copolymer (PFA), tetrafluoroethylene and hexafluoropropylene copolymer (PEP), tetrafluoroethylene Ethylene and ethylene copolymer (ETFE), polychlorotrifluoroethylene (PCTFE), tetrafluoroethylene and ethylene copolymer (ETFE), trifluoroethylene and ethylene copolymer (ECTFE), polyvinylidene fluoride (PVDF), etc. All kinds of fluorine-containing resins are made into plates to store chemicals, so as to achieve corrosion resistance and maintain the high purity quality of chemicals. Its main flaws are:

Due to the excellent low surface tension anti-sticking properties of fluorine-containing resin itself, it causes troubles when it is bonded and fixed to the equipment substrate.

Contents of the invention

The main purpose of the present invention is to provide a manufacturing method and device for a fluorine-containing resin composite plate, mainly using a radiation heat source to irradiate the fluorine-containing resin plate and glass fiber cloth to a temperature above the melting point of the fluorine-containing resin, and then pass through the temperature in the device. The control roller group presses the fluorine-containing resin sheet and the glass fiber cloth to weld and combine it into a fluorine-containing resin composite sheet, and the production process is under low tension conditions, and one side of the fluorine-containing resin sheet is locally heated to above the melting point of the fluorine-containing resin temperature, reducing the negative factors of heat and stress on the properties of fluorine-containing resins, and achieving the purpose of obtaining fluorine-containing resin composite plates with the best performance.

Another object of the present invention is to provide a manufacturing method and device for a fluorine-containing resin composite plate, providing a fluorine-containing resin plate to be adhered and fixed to the base material of the equipment by another joint, so as to improve the bond between the fluorine-containing resin and the base material. Purpose of bonding relationship.

The object of the present invention is achieved like this: a kind of manufacturing method of fluorine-containing resin composite plate, comprises that fluorine-containing resin plate and another medium are fused into composite plate, it is characterized in that: it comprises the following steps:

(1) Put the fluorine-containing resin sheet and the medium into the preheating zone together, and use a low-temperature heat source to heat all materials evenly under low tension conditions to avoid residual stress on the fluorine-containing resin sheet, and the fluorine-containing resin sheet will be preheated after preheating , the temperature of the material must be controlled below the melting point of the fluororesin;

(2) Guide the preheated fluorine-containing resin plate together with the medium to the melting zone through the guide wheel, heat it on one side with a high-temperature heat source, and under low tension conditions, make one side of the fluorine-containing resin plate be partially heated to the melting point of the fluorine-containing resin The above temperature makes the fluororesin sheet weldable;

(3) After the composite material has been heated at high temperature, it is guided to the pressing area by the rollers, and the temperature-controlled roller group in the pressing area is used to implement the welding auxiliary pressing of the composite material, and at the same time cooperate with the tempering treatment to avoid compounding. Plate residual stress, and at the same time control the crystallinity of the fluororesin composite plate.

It also includes: the pressed fluorine-containing resin composite sheet is transported to the quality inspection area, and the rollers of the high-voltage leakage detection device are used to detect whether there are pores or holes in the fluorine-containing resin composite sheet.

It also includes: the inspected fluorine-containing resin composite board, the single-sided film laminating operation of the PVC film is carried out by the lamination roller in the packaging area, and then the finished product is coiled by the coiling wheel.

The medium is glass fiber cloth. The heat source of the preheating zone is radiation irradiation at low temperature. The set value of the heat source temperature in the preheating zone is adjusted according to the thickness of the fluororesin sheet and the speed of the production process. The heat source of the melting zone is the irradiation of high temperature radiation.

The present invention also provides a manufacturing device for a fluorine-containing resin composite plate, which is characterized in that it includes the following components in sequence: one roll is provided with a tension adjusting shaft seat for the fluorine-containing resin plate and the other is provided with a Tension adjustment shaft seat for fused dielectric material;

Rollers for guiding the output of each material;

a first guide wheel for gathering said materials;

A preheating furnace is installed in the preheating zone;

second guide wheel;

In the fusion zone, there are high-temperature radiation heaters on the upper and lower floors, upper and lower rollers, hot air fans for shaping, and most temperature-controlled roller groups for auxiliary pressing;

a finished take-up wheel;

The preheated fluorine-containing resin composite plate is guided by the second guide wheel into the fusion zone, and the high-temperature heater on the upper layer of the fusion zone, under the condition of low tension, heats the outside of the fluorine-containing resin plate locally to The temperature above the melting point of fluororesin; Among them, the surface temperature of the upper roller in contact with the fluororesin plate must be controlled so that the surface temperature of the upper roller must be controlled below the melting point of the fluororesin. After the fluororesin plate leaves the upper high-temperature radiation heater , before entering the lower roller, use a hot air blower to heat the surface of the glass fiber cloth, so that the temperature of the glass fiber cloth reaches the same temperature as the fluororesin sheet, and the lower roller is also heated to the melting point of the fluororesin through the lower high-temperature radiation heater, so that Fluorine-containing resin and glass fiber cloth are in a weldable state.

A high-voltage leakage detection device roller set is connected behind the fusion zone to detect whether the fluorine-containing resin composite plate has pores or holes.

Between the fusion zone and the finished product take-up wheel, there is a roll of tension adjustment shaft seat with PVC film and its driving roller, so that the inspected fluorine-containing resin composite plate can be coated with PVC film on one side by the film roller. Film pasting operation, and then take up the finished product by the take-up wheel.

Further description will be provided below in combination with preferred embodiments and accompanying drawings.

Description of drawings

Fig. 1 is a schematic diagram of the production process of the device of the present invention to produce a fluorine-containing resin composite plate.

Detailed ways

As shown in Figure 1, the device used in the manufacture of fluorine-containing resin composite plates of the present invention includes in sequence:

A roll of tension adjustment axle seat 11 provided with fluorine-containing resin sheet material, a roll of tension adjustment axle seat 21 provided with fluorine-containing resin film, and a roll of tension adjustment axle seat 31 provided with glass fiber cloth;

Rollers 12, 22, 32 for guiding the output of each material;

a first guide wheel a for gathering the materials;

A preheating furnace 5 is provided with an upper radiation heater 51 and a lower radiation heater 52;

second guide wheel b;

High-temperature radiation heaters 61, 62 on the upper and lower floors;

The third guide wheel group c includes upper and lower rollers c1, c2; a hot air blower 7 is used for shaping;

scroll wheel d;

Most temperature control roller sets d1, d2, d3, d4 for transmission;

High voltage leakage detection device roller group e1, e2;

The tension adjustment shaft seat 8 and its transmission rollers 81, 82 are provided with PVC film;

Finished take-up wheel 9;

Its manufacturing method and steps include:

1. Install fluorine-containing resin plate 10, fluorine-containing resin film 20 (PFA or FEP film, PTFE composite plate needs to be used), glass fiber cloth 30 and other materials in the preparation area in the order shown in Figure 1 on individual tension adjustment shafts Seats 11, 21, 31;

2. The materials 11, 21 and 31 installed in order are guided by the rollers 12, 22 and 32 respectively and assembled together, and enter the preheating zone through the first guide wheel a. There is an upper layer in the preheating furnace 5 used in the preheating zone The radiant heater 51 and the lower radiant heater 52 can be adjusted separately according to the material specifications; wherein, the heat source temperature setting value of the preheating furnace 5 is adjusted according to factors such as the thickness of the fluorine-containing resin plate and the production process speed, and includes After the fluororesin sheet is preheated, the temperature of the material must be controlled below the melting point of the fluororesin;

3. The preheated composite material enters the melting zone through the second guide wheel b, and the semicircular high-temperature radiation heater 61 on the upper layer of the melting zone is irradiated from the outside under low tension conditions to make the outside of the fluorine-containing resin plate 10 Partial heating to a temperature above the melting point of the fluorine-containing resin; among them, the surface temperature of the upper roller c1 of the third roller group c in contact with the fluorine-containing resin plate 10 must be controlled, so that the surface temperature of the upper roller c1 must be controlled below the melting point of the fluorine-containing resin After the fluorine-containing resin plate leaves the upper semicircular high-temperature radiation heater 61 and before entering the lower roller c1, the surface of the glass fiber cloth 30 can be heated by a hot air blower 7, so that the temperature of the glass fiber cloth 30 also reaches the temperature of the fluorine-containing resin plate. 10 at the same temperature, and the lower roller c2 is also heated to the melting point of the fluorine-containing resin through the lower semicircular high-temperature radiation heater 62, so that the fluorine-containing resin 10 and the glass fiber cloth 30 can be welded together; as for the upper roller c1 The gap control between the lower roller c2 is based on the thickness of the final fluorine-containing resin composite plate, so that all materials can get the best welding effect under this condition;

4. After heating, the composite materials 10, 20, 30 are guided to the pressing area by the roller d, and the temperature-controlled roller groups d1, d2, d3, and d4 in the pressing area are used to perform composite material welding and auxiliary pressing, and cooperate with the implementation Tempering treatment to avoid residual stress of the composite sheet, and at the same time control the crystallinity of the fluorine-containing resin composite sheet;

5. The pressed fluorine-containing resin composite sheet is transported to the quality inspection area. In the quality inspection area, the rollers e1 and e2 of the high-voltage leakage detection device can be used to detect whether there are pores or holes in the fluorine-containing resin composite sheet. defect phenomenon;

6. The inspected fluorine-containing resin composite plate 91 passes through the laminating rollers 81 and 82 in the packaging area, and performs the single-sided film laminating operation of the PVC adhesive film 8a, and is then taken up by the take-up wheel 9 to complete the entire production process.

In the above method, taking the actual production of 2.5mm PTFE fluororesin composite sheet as an example, the parameters can be preset as follows:

PTFE sheet 10 thickness: 2mm;

PFA film 20 thickness: 0.127mm;

Glass fiber cloth 30 thickness: 0.5mm;

Tension adjustment axle seat 11, 21, 31 tension: 150Kg;

The temperature setting value of the upper radiation heater 51 of the preheating furnace: 300°C;

The temperature setting value of the lower radiation heater 52 of the preheating furnace: 250°C;

The temperature setting value of the semicircular high-temperature radiation heater 61 on the upper layer of the melting zone: 400°C;

The temperature setting value of the semicircular high-temperature radiation heater 62 in the lower layer of the melting zone: 360°C;

The temperature setting value of the upper roller c1 in the melting zone: 300°C;

The temperature setting value of c2 of the lower roller in the melting zone: 330°C;

The setting value of the gap between the upper roller c1 and the lower roller c2 in the melting zone: 2.5mm;

Temperature setting value of hot air blower 7 in melting zone: 400°C;

The temperature setting value of the temperature control roller d in the pressing area: 330°C;

The temperature setting value of the temperature control roller d1 in the pressing area: 300°C;

The temperature setting value of the temperature control roller d2 in the pressing area: 250°C;

The temperature control rolling d3 temperature setting value in the pressing area: 80°C;

The temperature setting value of the temperature control roller d4 in the pressing area: 20°C;

High-voltage leakage detection device roller e1, e2 detection setting value in the quality inspection area: DC 20000v;

PVC film 8a thickness: 0.3mm;

Production process feeding speed: 5M/Hr;

According to the above production process, 2.5mm PTFE fluorine-containing resin composite sheet can be obtained with the following physical properties:

(1) Specific gravity: 2.174 (the specific gravity of the original PTFE sheet is 2.182).

(2) Peel strength value between PTFE sheet and glass fiber cloth: 21.9N/cm.

In this way, the manufacturing method of the present invention can obtain a composite plate in which the fluorine-containing resin plate and the glass fiber cloth are welded together, thereby increasing the firmness of bonding between the plate and the base material of the equipment.

The above-mentioned embodiments are only preferred states derived from the technical features of the present invention, and are not intended to limit the present invention. All other similar structures, materials or simple design changes used should fall within the protection scope of the present invention Cover included.

Claims (10)

1, a kind of manufacture method of fluorine resin composite board comprises fluorine resin sheet material and another medium are fused into composite board that it is characterized in that: it comprises the steps:

(1) fluorine resin sheet material and medium are together entered the preheating zone, utilize the low-temperature heat source heating, make all material evenly preheating under the low-tension condition, avoid fluorine resin sheet material residual stress, and fluorine resin sheet material is through after the preheating, and material temperature must be controlled at the following temperature of fluorine resin fusing point;

(2) together guide to melting zone by the fluorine resin sheet material and the medium of guide wheel after with preheating, with the one-sided heating of high temperature heat source, under the low-tension condition, make the one-sided local heat of fluorine resin sheet material to the above temperature of fluorine resin fusing point, make fluorine resin sheet material have weldable;

(3) composite after heating is finished through high temperature, guide to the pressing district by roller again, utilize the temperature control roller set in pressing district, implement this composite welding assisted compression, cooperate simultaneously and implement temper, avoiding the composite board residual stress, and control the crystallinity of fluorine resin composite board simultaneously.

2, the manufacture method of fluorine resin composite board according to claim 1, it is characterized in that: further comprising has: the fluorine resin composite board of finishing through pressing, be transported to the product examine district again, whether use high voltage earth detector roller, detecting the fluorine resin composite board has hole or broken hole flaw.

3, the manufacture method of fluorine resin composite board according to claim 2, it is characterized in that: further comprising: the fluorine resin composite board of Guoing on inspection, the pad pasting roller of process bagging area is implemented the single face pad pasting operation of polyvinyl chloride glued membrane, batches through winding wheel to be finished product again.

4, the manufacture method of fluorine resin composite board according to claim 1 is characterized in that: this medium is a glass fabric.

5, the manufacture method of fluorine resin composite board according to claim 1 is characterized in that: the thermal source of this preheating zone is the radiation irradiation of low temperature.

6, according to the manufacture method of claim 1 or 5 one of them described fluorine resin composite board, it is characterized in that: the heat source temperature of this preheating zone setting value is to adjust according to fluorine resin sheet metal thickness and production technology speed.

7, the manufacture method of fluorine resin composite board according to claim 1 is characterized in that: the thermal source of this melting zone is the irradiation of hyperthermia radiation.

8, a kind of manufacturing installation of fluorine resin composite board is characterized in that: it comprises in regular turn as lower member:

One volume is provided with the tension adjustment axle bed of fluorine resin sheet material and the tension adjustment axle bed that a volume is provided with the dielectric material that fuses with this fluorine resin sheet material; Guide the roller of described each material output; First guide wheel of assembling described each material; Be provided with preheating furnace in one preheating zone; Second guide wheel; Be provided with the hyperthermia radiation heater of levels in one fusion area, upper and lower roller, the air-heater of a typing usefulness, most temperature control roller set that supply assisted compression to use; One finished product winding wheel;

Fluorine resin composite board after the preheating enters the fusion area through the guiding of second guide wheel, the high temperature heater (HTH) on this upper strata, fusion area, under the low-tension condition, make the outside local heat of fluorine resin sheet material to the above temperature of fluorine resin fusing point by the irradiation of outside hyperthermia radiation; Wherein, must control the upper roller surface temperature that contacts with fluorine resin sheet material, make the surface temperature of upper roller must be controlled at the following temperature of fluorine resin fusing point, after fluorine resin sheet material leaves upper strata hyperthermia radiation heater, enter before the bottom roller, use air-heater heating glass fiber cloth surface, make the temperature of glass fabric also reach the identical temperature of fluorine resin sheet material, this bottom roller also is heated to the fluorine resin melting temperature through lower floor's hyperthermia radiation heater, make fluorine resin and glass fabric form can welding state.

9, the manufacturing installation of fluorine resin composite board according to claim 8 is characterized in that: whether the high voltage earth detector roller set that continued behind this fusion area has hole or broken hole flaw in order to detect this fluorine resin composite board.

10, the manufacturing installation of fluorine resin composite board according to claim 8, it is characterized in that: be equipped with tension adjustment axle bed and live roller thereof that a volume is provided with the polyvinyl chloride pad pasting between this fusion area and the finished product winding wheel, make the fluorine resin composite board checked implement the single face pad pasting operation of polyvinyl chloride glued membrane, batch through winding wheel again and be finished product through the pad pasting roller.

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