1. A process method for forming a silica gel layer on the surface of a glass container by hot-pressing vulcanization is characterized by comprising the following steps: the method comprises the following steps:

s1, coating a layer of silicon-based bonding agent on the surface of the glass container;

s2, drying the surface of the glass container and the silicon-based bonding agent to form a silicon-based coating on the surface of the glass container;

s3, placing the glass container processed in the step S2 into a hot-pressing mold, positioning and closing the mold, and preheating;

s4, after preheating, opening the mold, keeping the preheating temperature, adding a silica gel raw material into the hot pressing mold, closing the mold, keeping the temperature and pressurizing for a period of time, and forming a silica gel layer at the silica gel coating position of the glass container;

and S5, opening the die and taking out the finished product.

2. The process method for forming the silica gel layer on the surface of the glass container through hot pressing and vulcanization according to claim 1, characterized in that: in step S1, the glass container is a glass meal box, and a silicon-based bonding agent is coated from the outer bottom of the glass container to a position four fifths of the height.

3. The process method for forming the silica gel layer on the surface of the glass container through hot pressing and vulcanization according to claim 1, characterized in that: in step S1, the glass container is a glass bottle, and a silicon-based bonding agent is coated from the outer bottom end of the glass container to a position 2mm below the screw threads.

4. The process method for forming the silica gel layer on the surface of the glass container through hot pressing and vulcanization according to claim 1, characterized in that: in step S1, the glass container is a glass can, and a silicon-based bonding agent is coated from the bottom end of the outer side of the glass container to a position 5mm below the mouth.

5. The process method for forming the silica gel layer on the surface of the glass container through hot pressing and vulcanization according to claim 1, characterized in that: in step S2, the glass container is turned upside down and dried in a baking oven to form a silicon-based coating with the thickness of 0.01mm-0.1mm, the heating temperature is 40 ℃ to 100 ℃, and the heating time is 2min to 50 min.

6. The process method for forming the silica gel layer on the surface of the glass container through hot pressing and vulcanization according to claim 1, characterized in that: in step S2, the hot press mold includes an upper mold, an upper mold plate disposed above the upper mold, and a lower mold disposed below the upper mold, a positioning block adapted to the glass container and having an air blowing hole is disposed on one side of the lower mold facing the upper mold, the glass container is reversely buckled on the positioning block, and a sliding block for pressing the edge of the glass container is slidably disposed on the lower mold and near the edge of the glass container;

the upper die side part and the lower die side part are respectively coated with an upper die heating mechanism and a lower die heating mechanism;

the glass container mould is characterized in that a containing cavity is formed in the position, corresponding to the glass container, of the upper mould, a pressure head is fixed at the position, corresponding to the containing cavity, of the upper mould plate, and the pressure head is connected with the top end of the containing cavity in a clamping mode.

7. The process method for forming the silica gel layer on the surface of the glass container through hot pressing and vulcanization according to claim 6, characterized in that: in step S3, the glass container processed in step S2 is turned upside down to a positioning block of a hot press mold, the slide block is moved in a direction close to the glass container until the slide block is pressed against the edge of the glass container, the upper mold and the upper mold plate are sequentially covered, and the upper mold heating mechanism and the lower mold heating mechanism are opened to enable the preheating temperature to be 150 ℃ to 170 ℃.

8. The process method for forming the silica gel layer on the surface of the glass container through hot pressing and vulcanization according to claim 6, characterized in that: in step S4, the upper template is opened, the silica gel raw material is put into the accommodating cavity, the temperature is 150-170 ℃, the pressure is 100-200kgf/cm2, the silica gel layer with the thickness of 1-8 mm is formed at the silica gel coating position of the glass container, and the Brinell hardness of the silica gel layer is 30-75 ℃.

9. The process method for forming the silica gel layer on the surface of the glass container through hot pressing and vulcanization according to claim 8, characterized in that: the silica gel raw material is a solid silica gel strip.

10. The process method for forming the silica gel layer on the surface of the glass container through hot pressing and vulcanization according to claim 6, characterized in that: in step S5, a blowing device is used to blow air into the mold along the blowing holes of the positioning block, and then the upper film is opened, and the slider is moved backward to take out the finished product.

Background

The glass container is generally made from more than ten raw materials of cullet, soda ash, sodium nitrate, shellfish carbonate, quartz sand and the like, and is manufactured by the processes of high-temperature melting and shaping at 1600 ℃.

Glass containers are generally used for containing food, and have the obvious advantages of no bisphenol A, no peculiar smell, no reaction with the food, easy cleaning, good transparency, high hardness, high temperature resistance and the like, but also have the obvious defects, such as too smooth and fragile surface and easy injury to people after being broken. The existing method with the defects is to add a silica gel sleeve to the glass container, the split method causes the product to have low integrity and restricts the change of the product appearance, the gap at the joint of the two is easy to store dirt and dirty, and the effect that people are not easy to hurt after the glass container is broken is not achieved; the other is liquid silica gel sleeve beer, which can solve the problem of adding silica gel sleeve, but the process is complex, the production cost is high, because the vast majority of glass containers are used for daily life of the public, the manufacturing cost is high, the market price of finished glass container products is increased, and the glass containers cannot be applied to daily life of the public on a large scale. There is currently no solution to the problem of the fragile, personal injury associated with glass containers at low cost.

Disclosure of Invention

The invention aims to provide a process method for forming a silica gel layer on the surface of a glass container through hot-pressing vulcanization, which has the advantages of high product yield, firm adhesion between silica gel and glass, explosion resistance and falling resistance, avoids the problem of secondary damage caused by the scattering of the glass after falling and rotting, and solves the problems of high cost, fragility of the glass container and easy injury to people in the prior art.

In order to realize the purpose, the invention provides a process method for forming a silica gel layer on the surface of a glass container through hot-pressing vulcanization, which comprises the following steps:

s1, coating a layer of silicon-based bonding agent on the surface of the glass container;

s2, drying the surface of the glass container and the silicon-based bonding agent to form a silicon-based coating on the surface of the glass container;

s3, placing the glass container processed in the step S2 into a hot-pressing mold, positioning and closing the mold, and preheating;

s4, after preheating, opening the mold, keeping the preheating temperature, adding a silica gel raw material into the hot pressing mold, closing the mold, keeping the temperature and pressurizing for a period of time, and forming a silica gel layer at the silica gel coating position of the glass container;

and S5, opening the die and taking out the finished product.

Preferably, in step S1, the glass container is a glass meal box, and the silicon-based bonding agent is coated from the outer bottom of the glass container to a height of four fifths of the height.

Preferably, in step S1, the glass container is a glass bottle, and the silicon-based bonding agent is coated from the outer bottom end of the glass container to a position 2mm below the screw thread.

Preferably, in step S1, the glass container is a glass can, and the silicon-based bonding agent is coated from the outer bottom end of the glass container to a position 5mm below the mouth.

Preferably, in step S2, the glass container is reversed and baked in a baking oven to form a silicon-based coating with a thickness of 0.01mm-0.1mm, the heating temperature is 40 ℃ -100 ℃, and the heating time is 2min-50 min.

Preferably, in step S2, the hot-pressing mold includes an upper mold, an upper mold plate disposed above the upper mold, and a lower mold disposed below the upper mold, a positioning block adapted to the glass container and having an air blowing hole is disposed on one side of the lower mold facing the upper mold, the glass container is reversely buckled on the positioning block, and a sliding block for pressing the edge of the glass container is slidably disposed on the lower mold and near the edge of the glass container;

the upper die side part and the lower die side part are respectively coated with an upper die heating mechanism and a lower die heating mechanism;

the glass container mould is characterized in that a containing cavity is formed in the position, corresponding to the glass container, of the upper mould, a pressure head is fixed at the position, corresponding to the containing cavity, of the upper mould plate, and the pressure head is connected with the top end of the containing cavity in a clamping mode.

Preferably, in step S3, the glass container processed in step S2 is reversely buckled to a positioning block of a hot pressing mold, the slide block is moved toward the direction close to the glass container until the slide block is pressed against the edge of the glass container, the upper mold and the upper mold plate are sequentially covered, and the upper mold heating mechanism and the lower mold heating mechanism are opened to enable the preheating temperature to be 150 ℃ to 170 ℃.

Preferably, in step S4, the upper template is opened, the silica gel raw material is poured into the accommodating cavity, the temperature is 150-170 ℃, the pressure is 100-200kgf/cm2, the silica gel layer with the thickness of 1-8 mm is formed at the silica gel coating position of the glass container, and the Brinell hardness of the silica gel layer is 30-75 ℃.

Preferably, the silica gel raw material is a solid silica gel strip.

Preferably, in step S5, a blowing device is used to blow air into the mold along the blowing holes of the positioning block, and then the upper film is opened, and the slider is moved backward to take out the finished product.

The invention has the following beneficial effects:

the surface of the glass container is not subjected to post-treatment such as spraying, the silica gel can be combined only by coating a layer of silicon-based bonding agent on the surface and then drying, the process is energy-saving and environment-friendly, and the method conforms to the social development trend. After silica gel is combined on the surface of the glass container, on the basis of permeability, safety and environmental protection of base glass, the advantages of explosion prevention, falling prevention and better safety of the product are added, so that the broken glass cannot be scattered everywhere; the molded product has beautiful appearance and various surfaces with changed colors. The glass container is formed in one step through a hot-pressing vulcanized silica gel forming process, the yield of products is high, the silica gel is firmly bonded with the glass, and the glass can be washed by a dishwasher, boiled by water or disinfected at high temperature; silica gel is attached to the surface of the glass container, so that the surface of the product is good in hand feeling (soft), antiskid, heat-insulating, cold-insulating and good in consumer experience.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

FIG. 1 is a schematic diagram of a hot pressing mold according to an embodiment of a process for forming a silica gel layer by hot pressing and vulcanizing a surface of a glass container according to the present invention;

fig. 2 is a structural view of a hot pressing mold in an embodiment of a process for forming a silica gel layer by hot pressing vulcanization on the surface of a glass container according to the present invention.

Reference numerals

1. Mounting a template; 2. an upper die; 3. an upper die heating mechanism; 4. a glass container; 5. positioning blocks; 6. a lower die; 7. a lower die heating mechanism; 8. a slide block.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed implementation and the specific operation process are provided, but the protection scope of the present invention is not limited to the present embodiment.

FIG. 1 is a schematic diagram of a hot pressing mold according to an embodiment of a process for forming a silica gel layer by hot pressing and vulcanizing a surface of a glass container according to the present invention; fig. 2 is a structural view of a hot pressing mold according to an embodiment of a process for forming a silica gel layer by hot pressing and vulcanizing a surface of a glass container, and as shown in the figure, the process includes the following steps:

s1, coating a layer of silicon-based bonding agent on the surface of the glass container 4;

s2, drying the surface of the glass container 4 and the silicon-based bonding agent to form a silicon-based coating on the surface of the glass container 4;

s3, placing the glass container 4 processed in the step S2 into a hot-pressing mold, positioning and closing the mold, and preheating;

s4, after preheating, opening the mold, keeping the preheating temperature, adding a silica gel raw material into the hot pressing mold, closing the mold, keeping the temperature and pressurizing for a period of time, and forming a silica gel layer at the silica gel coating position of the glass container 4;

and S5, opening the die and taking out the finished product.

Preferably, in step S1, the glass container 4 is a glass meal box, and the silicon-based bonding agent is coated from the outer bottom of the glass container 4 to four fifths of the height.

Preferably, in step S1, the glass container 4 is a glass bottle, and the silicon-based bonding agent is coated from the outer bottom end of the glass container 4 to a position 2mm below the screw thread.

Preferably, in step S1, the glass container 4 is a glass can, and the silicon-based bonding agent is coated from the outer bottom end of the glass container 4 to 5mm below the mouth.

Preferably, in step S2, the glass container 4 is turned upside down in a baking oven to be dried to form a silicon-based coating with a thickness of 0.01mm to 0.1mm, the heating temperature is 40 ℃ to 100 ℃, the heating time is 2min to 50min, and the glass container 4 is turned upside down to be placed, so that the coated silicon-based coating is prevented from being damaged.

Preferably, in step S2, the hot-pressing mold includes an upper mold 2, an upper mold plate 1 disposed above the upper mold 2, and a lower mold 6 disposed below the upper mold 2, a positioning block 5 adapted to the glass container 4 and provided with a gas blowing hole is disposed on one side of the lower mold 6 facing the upper mold 2, the glass container 4 is reversely buckled on the positioning block 5, and a slider 8 for pressing the edge of the glass container 4 is slidably disposed on the lower mold 6 and near the edge of the glass container 4;

the side part of the upper die 2 and the side part of the lower die 6 are respectively coated with an upper die heating mechanism 3 and a lower die heating mechanism 7, and the upper die heating mechanism 3 and the lower die heating mechanism 7 in the embodiment are heating plates;

go up the mould 2 and correspond the holding chamber has been seted up to the position of glass container 4, cope match-plate pattern 1 corresponds the position in holding chamber is fixed with the pressure head, the pressure head with holding chamber top joint.

Preferably, in step S3, the glass container 4 processed in step S2 is turned upside down to the positioning block 5 of the hot press mold, the slide block 8 is moved toward the glass container 4 until the slide block 8 is pressed against the edge of the glass container 4, the upper mold 2 and the upper mold plate 1 are sequentially covered, and the upper mold heating mechanism 3 and the lower mold heating mechanism 7 are opened so that the preheating temperature is 150 ℃ to 170 ℃.

Preferably, in step S4, the upper template 1 is opened, the silica gel raw material is put into the containing cavity, the temperature is 150-170 ℃, the pressure is 100-200kgf/cm2, the silica gel layer with the thickness of 1mm-8mm is formed at the silica gel coating position of the glass container 4, and the Brinell hardness of the silica gel layer is 30-75 ℃.

Preferably, the silica gel raw material is a solid silica gel strip.

Preferably, in step S5, an air blowing device is used to blow air into the mold along the air blowing holes of the positioning block 5, then the upper film is opened, the slider 8 is moved backward, and then the finished product is taken out.

To further illustrate the invention, the following examples are disclosed:

example 1:

coating silicon-based bonding agent on four fifths of the waist of a clean glass lunch box from the bottom, reversely buckling the glass lunch box in an oven, heating the glass lunch box to 80 ℃, baking the glass lunch box for 10min to ensure that a layer of silicon-based bonding agent with the thickness of 0.07mm is attached to the corresponding surface of the glass lunch box, then placing the treated glass lunch box on a positioning block 5 of a hot pressing mold, closing the mold, closing four sliding blocks 8 (the sliding block 8 in the embodiment is a linear sliding block 8 matched with the edge of the glass lunch box, it needs to be explained that the figure 1 is an example for producing the glass lunch box, a person skilled in the art can know the production of other glass containers 4 through the invention, so the description is not repeated herein), respectively pressing the four edges of the glass lunch box, heating and preheating, opening an upper mold plate 1 of an upper mold 2 of the hot pressing mold after the temperature of the hot pressing mold and the glass lunch box reaches 170 ℃, placing mixed weighed solid silica gel into a containing cavity, closing the upper template 1, heating and pressurizing the mold, controlling the temperature of the mold at 170 ℃, controlling the pressure at 200kgf/cm2, and keeping for 90 seconds to form silica gel with the thickness of 3mm and the hardness of 45 degrees at the position of the glass lunch box coated with the bonding agent; and blowing the mold along the blowing holes on the positioning blocks 5 through a blowing device, opening the upper mold 2, moving the sliding block 8 backwards, and manually taking out the product.

Example 2:

coating silicon-based bonding agent on four fifths of the waist of a clean glass lunch box from the bottom, reversely buckling the glass lunch box in an oven, heating to 90 ℃, baking for 8min to ensure that a layer of silicon-based bonding agent with the thickness of 0.05mm is attached to the corresponding surface of the glass lunch box, then placing the treated glass lunch box on a positioning block 5 of a mold, closing the mold, closing four sliding blocks 8, heating and preheating the mold, opening an upper mold plate 1 of an upper mold 2 after the temperature of the mold and the glass lunch box reaches 160 ℃, placing mixed weighed solid silica gel into an accommodating cavity, closing the upper mold plate 1, heating and pressurizing the mold, controlling the temperature of the mold at 165 ℃, controlling the pressure at 170kgf/cm2, keeping for 120 seconds, and forming the silica gel with the thickness of 4mm and the hardness of 45 ℃ at the position of the glass lunch box coated with the bonding agent; and blowing the mold through a blowing hole of a positioning block 5 of the mold, opening the upper mold 2, moving the sliding block 8 backwards, and manually taking out a product.

Example 3:

coating silicon-based bonding agent on four fifths of the waist of a clean glass lunch box from the bottom, reversely buckling the glass lunch box in an oven, heating to 60 ℃, baking for 30min to ensure that a layer of silicon-based bonding agent with the thickness of 0.08mm is attached to the corresponding surface of the glass lunch box, then placing the treated glass lunch box on a positioning block 5 of a mold, closing the mold, closing four sliding blocks 8, heating and preheating the mold, opening an upper mold plate 1 of an upper mold 2 after the temperature of the mold and the glass lunch box reaches 160 ℃, placing mixed weighed solid silica gel into an accommodating cavity, closing the upper mold plate 1, heating and pressurizing the mold, controlling the temperature of the mold at 160 ℃, controlling the pressure at 150kgf/cm2, keeping for 80 seconds, and forming the silica gel with the thickness of 1.2mm and the hardness of 45 ℃ on the position of the glass lunch box coated with the bonding agent; and blowing the mold through a blowing hole of a positioning block 5 of the mold, opening the upper mold 2, moving the sliding block 8 backwards, and manually taking out a product.

Example 4:

coating a silicon-based bonding agent on a clean glass bottle from the bottom to 2mm below a screw tooth, reversely buckling the glass bottle in an oven, heating to 60 ℃, baking for 30min to ensure that a layer of silicon-based bonding agent with the thickness of 0.08mm is attached to the corresponding surface of the glass bottle, then putting the treated glass bottle on a positioning block 5 of a mold, closing the mold, closing two sliding blocks 8, heating and preheating the mold, opening an upper mold plate 1 of an upper mold 2 after the temperature of the mold and a glass meal box reaches 160 ℃, putting mixed weighed solid silica gel into an accommodating cavity, closing the upper mold plate 1, heating and pressurizing the mold, controlling the temperature of the mold at 160 ℃, controlling the pressure at 150kgf/cm2, keeping for 80 seconds, and forming the silica gel with the thickness of 1.2mm and the hardness of 45 ℃ on the place where the bonding agent is coated on the glass meal box; and (3) blowing the die through the air holes of the positioning block 5 of the die, opening the upper die 2, moving the two sliding blocks 8 backwards, and manually taking out the product.

Example 5:

coating a silicon-based bonding agent on a clean glass bottle from the bottom to 2mm below a screw thread, reversely buckling the glass bottle in an oven, heating the glass bottle to 80 ℃, baking the glass bottle for 20min to ensure that a layer of silicon-based bonding agent with the thickness of 0.1mm is attached to the corresponding surface of the glass bottle, then putting the treated glass bottle on a positioning block 5 of a mold, closing the mold, sliding a sliding block 8 towards the direction of the bottle opening of the glass bottle until the sliding block 8 presses the bottle opening (it needs to be noted that two semicircular sliding blocks 8 matched with the bottle opening are selected to press the bottle opening in the embodiment), heating and preheating the mold, opening an upper mold plate 1 of an upper mold 2 after the temperature of the mold and a glass lunch box reaches 170 ℃, putting mixed and weighed solid silica gel into a containing cavity, closing the upper mold plate 1, heating and pressurizing the mold, controlling the temperature at 170 ℃, controlling the pressure at 180kgf/cm2, keeping the temperature for 100 seconds, and forming the glass lunch box with the thickness of 2.0mm at the position coated with the bonding agent, silica gel with a hardness of 45 degrees; and blowing the mold through a blowing hole of a positioning block 5 of the mold, opening the upper mold 2, moving the two sliding blocks 8 backwards, and manually taking out the product.

Example 6:

coating a silicon-based bonding agent on a clean glass tank from the bottom to 5mm below the mouth part, reversely buckling the clean glass tank in an oven, heating the glass tank to 80 ℃, baking the glass tank for 30min to ensure that a layer of silicon-based bonding agent with the thickness of 0.1mm is attached to the corresponding surface of the glass tank, then putting the treated glass tank on a positioning block 5 of a mold, closing the mold, sliding a sliding block 8 towards the tank opening of the glass tank until the sliding block 8 presses the tank opening (in the embodiment, two semicircular sliding blocks 8 matched with the tank openings are selected to press the tank openings), heating and preheating the mold, opening an upper mold plate 1 of an upper mold 2 after the temperature of the mold and a glass lunch box reaches 175 ℃, putting the mixed weighed solid silica gel into a containing cavity, closing the upper mold 1, heating and pressurizing the mold, controlling the temperature of the mold at 175 ℃, controlling the pressure at 200kgf/cm2, keeping the temperature for 120 seconds, and enabling the thickness of the place where the bonding agent is coated on the glass lunch box to be 2.0mm, silica gel with a hardness of 45 degrees; and blowing the mold through a blowing hole of a positioning block 5 of the mold, opening the upper mold 2, moving the two sliding blocks 8 backwards, and manually taking out the product.

Therefore, the process method for forming the silica gel layer on the surface of the glass container through hot pressing and vulcanizing has the advantages of high product yield, firm adhesion between silica gel and glass, explosion resistance and falling prevention, avoids the problem of secondary damage caused by scattering of the glass after falling and rotting, and solves the problems of high cost, fragility of the glass container and easy injury to people in the prior art.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.