With the continuous expansion of the market space of milk beverage plastic bottles, the online detection and quality control technology o​f milk beverage plastic bottles has become the focus of quality control of various dairy and beverage manufacturers.

When purchasing PET raw material particles, enterprises should pay attention to whether the various quality indicators meet the technical requirements of the enterprise. The specific detection indicators for PET raw material particles include particle powder, melting point, ash content, moisture viscosity, color, acetaldehyde content, The terminal carboxyl group content and the like. In the process of logistics transportation after the procurement of PET raw materials, enterprises should focus on the packaging of PET particles. In the production process, the key points for the detection of PET raw material particles include the drying temperature of PET particles, drying time, dew point after drying, plasticizing temperature, back pressure during injection, screw speed, holding time and pressure.

After obtaining qualified PET raw material particles, we also need to melt the PET raw material particles to make preforms, blow molding, and post-sterilization filling. As a well-known manufacturer, we complete quality control in the production process:

The main and key inspection items for preforms include:

1. Check whether the end of the bottle mouth is flat; whether the thread in the tooth area is intact; whether the flashing edge and the supporting ring are intact; whether there are coking, color, sticking, dent, scratch, pollution, foreign matter, unclean, air bubbles, white fog, tail End drawing, unevenness, damage and other phenomena. In the process of replacing new equipment, new molds, and adopting new processes, if an abnormal situation occurs, the frequency of visual inspection must be increased as required.

2. In the process of replacing new equipment, new molds, and adopting new technology, if abnormal conditions occur, the size of the whole mold or 8 preforms must be tested according to the actual situation (the size of the embryo is measured by a projector).

3. Check preform weight, embryo height, inner diameter of bottle mouth, outer diameter of bottle mouth, outer diameter of thread, outer diameter of anti-theft ring, outer diameter of support ring, distance from bottle mouth to anti-theft ring, distance from bottle mouth to support ring, upper thickness, upper Waist thickness, lower waist thickness, bottom thickness and other parameters. These parameters must not exceed the deviation of the set value.

The main and key inspection items for bottles include:

1. Check the appearance of the whole mold after each boot or after the shift to confirm the appearance, capacity and post-filling condition of the bottle. After the production is normal, confirm the final process.

2. Check whether the end face of the bottle is flat; whether the thread is intact; whether the bottle’s flash and support ring are intact; whether there are coking, color, sticking, scratching, scratching, pollution, uncleanness, air bubbles, water marks, Bad phenomenon such as white fog; whether the molding is intact, no deadlock, dent, turn-out, rupture, bottom core offset; in the process of replacing new equipment, new molds, and adopting new technology, if abnormal conditions occur, it must be in accordance with the actual situation. The situation increases the frequency of visual inspection.

3. Detect bottle weight, bottle size, bottle height, shoulder thickness, upper waist thickness, lower waist thickness, bottom circumference thickness, bottom center thickness, shoulder outer diameter, upper waist outer diameter, lower waist outer diameter, bottom Outer diameter, cold capacity, heat capacity, drop performance, top pressure.

The main and key inspection items for the cover include:

1. Check the outer casing – whether there is drawing; whether the color is normal; whether there is crack or deformation, the burglar ring bridge is broken, etc.; whether the outer casing and the anti-theft ring are not completely formed; check the thread – whether there is deformation, incomplete molding, presence of silk Phenomenon, etc.; check the inner plug – whether there is incomplete molding; the cover has no foreign matter, odor, deformation and so on. In the process of replacing new equipment, new molds, and adopting new processes, if abnormal conditions occur, the size of the whole mold or 10 covers must be tested according to the actual situation;

2. Detect the outer diameter of the cover, the outer diameter of the anti-theft ring, the height of the cover, the inner diameter of the anti-theft ring, the inner diameter of the anti-theft ring, the inner diameter of the thread, the height of the cover (excluding the anti-theft ring), the outer diameter of the inner plug, the inner diameter of the inner plug, the inner plug height Thickness, cover weight. The outer diameter of the cover and the outer diameter of the inner plug can be detected using a projector.

The above test items can be completed by manual periodic sampling, or several key items can be detected continuously through online testing equipment. Upon testing, the qualified bottles will be filled into the filling machine. At present, various dairy beverage manufacturers are increasing the speed of filling equipment in order to pursue higher production efficiency and profit margin per unit time (from 36,000 bottles/hour in previous years to 48,000 bottles/hour). Therefore, the online inspection of the finished product cannot be completed by manual operation. At present, the production enterprises basically use the all-round photographic equipment produced by foreign manufacturers to check the sealing and liquid level of the finished products, and use the extrusion equipment (for elastic bottles) to detect the sealing condition of the bottles. Many manufacturers have adopted the above two detection methods for safety and insurance, and equipped with automatic reject devices for unqualified products to ensure that every product that enters the market is a qualified product.

With the continuous expansion of the market space of milk beverage plastic bottles, the online detection and quality control technology o​f milk beverage plastic bottles has become the focus of quality control of various dairy and beverage manufacturers.

When purchasing PET raw material particles, enterprises should pay attention to whether the various quality indicators meet the technical requirements of the enterprise. The specific detection indicators for PET raw material particles include particle powder, melting point, ash content, moisture viscosity, color, acetaldehyde content, The terminal carboxyl group content and the like. In the process of logistics transportation after the procurement of PET raw materials, enterprises should focus on the packaging of PET particles. In the production process, the key points for the detection of PET raw material particles include the drying temperature of PET particles, drying time, dew point after drying, plasticizing temperature, back pressure during injection, screw speed, holding time and pressure.

After obtaining qualified PET raw material particles, we also need to melt the PET raw material particles to make preforms, blow molding, and post-sterilization filling. As a well-known manufacturer, we complete quality control in the production process:

The main and key inspection items for preforms include:

1. Check whether the end of the bottle mouth is flat; whether the thread in the tooth area is intact; whether the flashing edge and the supporting ring are intact; whether there are coking, color, sticking, dent, scratch, pollution, foreign matter, unclean, air bubbles, white fog, tail End drawing, unevenness, damage and other phenomena. In the process of replacing new equipment, new molds, and adopting new processes, if an abnormal situation occurs, the frequency of visual inspection must be increased as required.

2. In the process of replacing new equipment, new molds, and adopting new technology, if abnormal conditions occur, the size of the whole mold or 8 preforms must be tested according to the actual situation (the size of the embryo is measured by a projector).

3. Check preform weight, embryo height, inner diameter of bottle mouth, outer diameter of bottle mouth, outer diameter of thread, outer diameter of anti-theft ring, outer diameter of support ring, distance from bottle mouth to anti-theft ring, distance from bottle mouth to support ring, upper thickness, upper Waist thickness, lower waist thickness, bottom thickness and other parameters. These parameters must not exceed the deviation of the set value.

The main and key inspection items for bottles include:

1. Check the appearance of the whole mold after each boot or after the shift to confirm the appearance, capacity and post-filling condition of the bottle. After the production is normal, confirm the final process.

2. Check whether the end face of the bottle is flat; whether the thread is intact; whether the bottle’s flash and support ring are intact; whether there are coking, color, sticking, scratching, scratching, pollution, uncleanness, air bubbles, water marks, Bad phenomenon such as white fog; whether the molding is intact, no deadlock, dent, turn-out, rupture, bottom core offset; in the process of replacing new equipment, new molds, and adopting new technology, if abnormal conditions occur, it must be in accordance with the actual situation. The situation increases the frequency of visual inspection.

3. Detect bottle weight, bottle size, bottle height, shoulder thickness, upper waist thickness, lower waist thickness, bottom circumference thickness, bottom center thickness, shoulder outer diameter, upper waist outer diameter, lower waist outer diameter, bottom Outer diameter, cold capacity, heat capacity, drop performance, top pressure.

The main and key inspection items for the cover include:

1. Check the outer casing – whether there is drawing; whether the color is normal; whether there is crack or deformation, the burglar ring bridge is broken, etc.; whether the outer casing and the anti-theft ring are not completely formed; check the thread – whether there is deformation, incomplete molding, presence of silk Phenomenon, etc.; check the inner plug – whether there is incomplete molding; the cover has no foreign matter, odor, deformation and so on. In the process of replacing new equipment, new molds, and adopting new processes, if abnormal conditions occur, the size of the whole mold or 10 covers must be tested according to the actual situation;

2. Detect the outer diameter of the cover, the outer diameter of the anti-theft ring, the height of the cover, the inner diameter of the anti-theft ring, the inner diameter of the anti-theft ring, the inner diameter of the thread, the height of the cover (excluding the anti-theft ring), the outer diameter of the inner plug, the inner diameter of the inner plug, the inner plug height Thickness, cover weight. The outer diameter of the cover and the outer diameter of the inner plug can be detected using a projector.

The above test items can be completed by manual periodic sampling, or several key items can be detected continuously through online testing equipment. Upon testing, the qualified bottles will be filled into the filling machine. At present, various dairy beverage manufacturers are increasing the speed of filling equipment in order to pursue higher production efficiency and profit margin per unit time (from 36,000 bottles/hour in previous years to 48,000 bottles/hour). Therefore, the online inspection of the finished product cannot be completed by manual operation. At present, the production enterprises basically use the all-round photographic equipment produced by foreign manufacturers to check the sealing and liquid level of the finished products, and use the extrusion equipment (for elastic bottles) to detect the sealing condition of the bottles. Many manufacturers have adopted the above two detection methods for safety and insurance, and equipped with automatic reject devices for unqualified products to ensure that every product that enters the market is a qualified product.